单项选择题

When his car was nowhere to be found, he wondered if someone______it.
A．stole
B．had stolen
C．was stealing
D．has stolen

A.
A．stole
B．had
B.was
C.has

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单项选择题

He was so hungry last night because he______nothing to eat since breakfast.
A．had had
B．had
C．has
D．has had

A.
A．had
B.had
C．has
D．has

单项选择题

By the end of this year our committee______out five thousand letters for contributions.
A．will send
B．have sent
C．have been sending
D．will have sent

A.
A．will
B.have
C.have
D.will