[ Modals ]
Students ___ be on time for class.
A. must
B. shouldn’t
C. mustn’t
D. should
Select your answer:

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Irregular verbs › View2nd form of know
A. knowed
B. knew
C. known
D. knewed
Grammar › View
The phone ___ while we were having dinner.
A. rings
B. ringing
C. rang
D. has rung
