题目内容
Hi, Bob. How are you doing? It has been a long time _____ we left our junior middle school.
| A.when | B.that | C.before | D.since |
D
试题分析:此处主句是现在完成时,从句是一般过去时,所以选since。句意:Bob你过得怎么样?自从我们初中毕业很长时间了。
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