Multiple choice

We use ... to say "it's not a good idea."

  1. must not

  2. shouldn't

  3. don't have to

  4. mustn't
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Shouldn't is the contraction of should not, which is used to advise against an action or state that something is not a good idea. Must not and mustn't express prohibition, while don't have to expresses a lack of obligation.

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