It ______months since we ______ in Shanghai.

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问题 It ______months since we ______ in Shanghai.

选项 A、has been...were
B、is ...are
C、was...had been
D、had been...have been

答案A

解析 since用在“It is (has been)十一段时间+since...”句型中,表示“自……以来有……时间了”。
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