TOEIC Decision Point

By vs With: Choose by Deadline, Route, or Tool

In TOEIC Part 5, by and with often appear in short business sentences. They look simple, so many test-takers answer too quickly.

The fast choice is not “What is the grammar name?” The fast choice is: is the sentence showing a deadline, route, doer, tool, extra item, or person together?

By = deadline, route, or doer. With = tool, extra detail, or together.

The 7-second choice

Do not stop and explain the sentence. Look for the signal after the blank.

By

Use it for a deadline, a route, a way of sending, or the person/team/company that did the work: by Friday, by train, by email, by the finance team.

With

Use it for a tool, attached item, included detail, or person together: with a card, with the form, with updated figures, with a colleague.

The signal to remember

By = route or limit. With = tool or extra item.

This is the MTC move. Do not name the grammar. Check the business picture in the sentence.

Please submit the report by Friday.
Friday is the final limit. Choose by.
Please submit the report with the signed form.
The signed form goes together with the report. Choose with.
The invoice was sent by email.
Email is the sending route. Choose by.
The invoice was sent with the receipt.
The receipt was included. Choose with.

What TOEIC wants you to notice

TOEIC often uses this trap in sentences about reports, invoices, applications, payments, emails, meetings, shipments, forms, and deadlines.

The trap is that both words can feel small and easy. But TOEIC does not ask whether the word is familiar. It checks whether you noticed the signal.

by Monday / by 5 p.m. / by the end of the month
Final time limit. Choose by.
by email / by phone / by train / by courier
Route or way. Choose by.
with the form / with the receipt / with updated figures
Extra item or included detail. Choose with.
with a card / with special equipment / with a colleague
Tool, support, or together. Choose with.

Watch the small words

The words after the blank usually show the answer quickly.

Choose by

Look for Monday, 5 p.m., the deadline, the end of the month, email, phone, courier, train, or a team that did the work.

Choose with

Look for form, receipt, attachment, ID, card, equipment, updated figures, additional information, or a person together.

This is not about explaining the sentence. It is about seeing the signal and taking the point.

Quick TOEIC check

Choose first. Then read the feedback. Use the one-second check: deadline/route, or tool/extra item?

1. All applications must be submitted ___ Friday.

2. Please return the form ___ a copy of your ID.

3. The confirmation will be sent ___ email.

4. The report was updated ___ the latest sales figures.

The mistake fast readers make

Fast readers often see a common business word after the blank and choose by memory. That is risky because TOEIC changes one small signal.

Weak choice

Choose because the sentence sounds like a business phrase you have seen before.

Better choice

Choose by signal: deadline, route, doer, tool, extra item, or together.

This is the MTC move: avoid the grammar maze, find the signal, make the decision, and move on.

Why this mistake returns under pressure

Many test-takers know by and with during review, but still miss them in timed practice. The problem is often not the words alone. It is the speed of the decision.

Under pressure, use the same move every time: look after the blank and ask what the next words are showing.

1-second tool: deadline/route/doer = by. Tool/extra item/together = with.
Next step

Use small TOEIC mistakes as a diagnostic

If you know the answer after review but miss it during timed practice, the problem may not be the word alone. It may be your decision pattern.

Start with the Learning Block Diagnostic to see whether your mistakes connect to Speed Trap, Memoriser, Over Thinker, Translator, Passive Listener, or Burnout.

Take the Learning Block Diagnostic Read Unless vs If Not Find Your TOEIC Plan

Continue reading

Use these pages to turn small TOEIC mistakes into faster decisions and better review.

Back to top TOEIC Strategy Library Learning Block Diagnostic TOEIC Plan Finder Unless vs If Not Late vs Later Near vs Nearly
🧠 SEO FAQ — By vs With What is the difference between “by” and “with”? “By” shows who did the action. “With” shows what was used to do the action. When should I use “by” in a sentence? Use “by” when you’re talking about a person or group that did something. Example: The report was written by the manager. When should I use “with”? Use “with” when you want to show the tool, method, or thing that helped do the action. Example: The report was written with a laptop. Can I use “by” and “with” in the same sentence? Yes. Example: The photo was taken by the assistant with a smartphone. Why does TOEIC test “by” and “with”? Because many learners mix them up. TOEIC checks if you know the difference between who did it and what was used. Is “with” always used for tools? Usually yes. “With” shows the object or method used to do something. Is “by” only used with people? “By” is mostly used for people, teams, or companies that take action. It’s common in passive voice. Can I say “The email was sent with the client”? Not usually. That sounds like the client was included. If the client sent it, say “by the client.” Is it correct to say “by using a pen”? Yes, but that’s a different structure. “By using a pen” means how something was done. “With a pen” is more common and simpler. How can I know which one is correct in TOEIC questions? Check the focus of the sentence. Is it about who did the action? → use “by”. Is it about what was used? → use “with”.