I wonder who drank all the milk yesterday. It _____ ...

I wonder who drank all the milk yesterday. It _____ have been Mary because she was out all day.

A. can’t

B. must

C. could

D. needn’t

Select your answer:

Other quiz:

Tenses › View

The water … . Quickly make coffee!

A. boils

B. is boiling

C. will boil

D. boiled

Future Passive › View

We will not close hospitals.

A. Hospitals won’t be closed.

B. Hospitals won’t closed.