Must / Mustn't — Bài Tập 3

For security reasons, you ___ leave the door unlocked at night.

You ___ cheat on the test.

The law is the law. We ___ break it, even if we disagree with it.

You ___ walk on the grass in this park.

You ___ be quiet in the library.

A soldier ___ obey orders.

Under the terms of the contract, you ___ disclose any of the project details.

You ___ smoke in here. It's a non-smoking area.

The evidence is overwhelming. The defendant ___ be guilty.

You ___ let your personal feelings interfere with your professional judgment.