[ Passive Voice with Modals ]
Choose the best answer:
Meat … in the refrigerator.
A. must be keep
B. must be kept
C. must keep
D. must keeping

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Modals and Modal Perfects › ViewCompanies such as Netflix have had a huge impact … traditional television companies.
A. in
B. to
C. on
D. at
Grammar › View
I (lay/laid) awake all last night worrying about final exams.
A. lay
B. laid
At the moment, he __________ music.
A. is listening to
B. are listening to
C. listens to
D. listen to
Grammar › View
We _______ new stories in our English class these days.
A. haven’t been reading
B. hasn’t been reading
C. aren’t reading