Thank you for giving me a hand. I ______ in the experiment without your valuable help. 
#89288
A
have failed
B
will fail
C
would have failed
D
must have failed
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I didn’t know that he was a cheat, or else I ________________ him.
#86371
A
should have believed
B
shouldn’t believe
C
wouldn’t have believed
D
couldn’t believe
    It is strongly suggested that measures _____students to cheat in the exams.
#87577
A
e taken to prevent
B
e taken to forbid
C
re taken to prevent
D
re taken to forbid
What a pity! Considering his ability and experience,he___ better.
#87930
A
need have done
B
must have done
C
can have done
D
might have done