—I’m sure Andrew will win the first prize in the final.—I think so. He _________ for it for months.
#101898
A
was preparing
B
is preparing
C
has been preparing
D
had been preparing
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Before I realized that what I said at the meeting did hurt him, he _________ without a word.
#101023
A
drove away
B
was driving away
C
was driven away
D
had driven away
 His sister left home in 1998,and ________ since.
#99572
A
had not been heard of
B
has not been heard of
C
had not heard of
D
has not heard of