Choose the word that fills the blank.
The thief ______ have entered through the window; it is still locked from inside.

can'tCorrect answerYour answermustCorrect answerYour answershouldCorrect answerYour answermightCorrect answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer A

Correct answer: A

The locked window makes it impossible, and an impossible past takes "can't have": he can't have entered that way.

Worth noting

"Must have entered" is a firm conclusion that he did, and the locked window proves the opposite.

Ten questions from Articles, prepositions and modals, at your own pace.

Ten questions from Articles, prepositions and modals, at your own pace.

Choose the word that fills the blank.The thief ______ have entered through the window; it is still locked from inside.