Allen has decided that he will be an engineer by the time he ________ twenty.
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A
had been
B
is going to be
C
will be
D
is
推荐题目
The phone had been ringing for three minutes before it            .
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A
answered
B
had answered
C
was answering
D
was answered
Shakespeare’s play Hamlet  into at least ten different films over the past years.
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A
had been made
B
was made
C
has been made
D
would be made
. –Hi, Bob, don’t you know me? --Oh, it’s you. I _____you.
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A
didn’t recognize
B
don’t recognize
C
haven’t recognize
D
won’t recognize