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【单选题】

— What were you doing when I phoned you last night?
— I ______ my homework and was starting to surf the Internet.

A.
have already finished
B.
was finishing
C.
was going to finish
D.
had just finished
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参考解析:
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举一反三

【单选题】Almost all of his time ______ experiments, he has no time to visit his parents.

A.
devoted to do
B.
devoted to doing
C.
devoting to doing
D.
is devoted to doing

【单选题】It’s no use____ that you didn’t know the rules.

A.
you pretend
B.
you to pretend
C.
of you to pretend
D.
your pretending