题目内容
The telephone _____ three times in the last hour, and each time it _____ for my sister.
A.had rung; was B.has rung; was
C.rang; has been D.has been ringing; is
B
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题目内容
The telephone _____ three times in the last hour, and each time it _____ for my sister.
A.had rung; was B.has rung; was
C.rang; has been D.has been ringing; is
B