We can eat in the dining hall. But we _______ eat in the classroom.
#75733
A
don’t
B
didn’t
C
can’t
D
aren’t
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As it turned out to be a problem of no importance , we     so much time looking into it . 
#62607
A
needn’t spend
B
didn’t have to spend
C
needn’t have spent
D
oughtn’t to spend
---_____book is this? --- I think it _____ Carla’s. It has his name on it.
#76303
A
Who is, could be
B
Who’s, might belong to
C
Whose, must be
D
Whose, can’t belong to
——Must I park my car behind the cinema?——No, you    . You     park it here.
#76791
A
mustn’t, may
B
may not, must
C
don’t have to, may
D
shouldn’t, must