Had they known what was coming next, they ___________ second thoughts.
#87385
A
may have
B
could have
C
must have had
D
might have had
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---Where is my reference book? It was here a moment ago.---Someone ___ it by mistake.
#89050
A
could have taken
B
must take
C
might take
D
must have taken
He ______ told you that because you have known the truth.      
#87760
A
needs not have
B
need not have
C
need not has
D
does not need have
.He has just arrived, but he talks as if he _____ all about that.
#89368
A
know      
B
knows
C
known     
D
knew
Premier Wen advocated school bus safety_______.
#87525
A
be guaranteed
B
guaranteeing
C
should guarantee
D
must be guaranteed