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Question 26

The museum rule creates an obligation. Complete it with a correctly formed modal phrase: Visitors ___ before entering the conservation lab.

  1. must remove their coatsCorrect answer
  2. must to remove their coats
  3. must removing their coats
  4. must removes their coats

Explanation

Must remove their coats is correctly formed because must takes the bare infinitive. Must to remove is the closest distractor, but adding to after a core modal makes the phrase ungrammatical.

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Question 26: The museum rule creates an obligation. Complete it with a… · English Modal Verbs · Questena