If you have something important to do, you ___ waste any time.
#89049
A
needn’t
B
mustn’t
C
may not
D
won’t
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But for your help,I ________ the place.
#87108
A
can’t find    
B
can’t have found
C
couldn’t have found
D
haven’t found
Without your help, I ____the exam last term. 
#89943
A
failed in
B
would have failed
C
wouldn’t pass
D
would fail