题目内容
I haven't had a good sleep________I started preparing for the entrance exams.
- A.as soon as
- B.while
- C.when
- D.since
D
分析:since(从……以来)引出时间状语从句,此时要注意时态,since从句中用一般过去时(started),而主句中用现在完成时(haven't had)
分析:since(从……以来)引出时间状语从句,此时要注意时态,since从句中用一般过去时(started),而主句中用现在完成时(haven't had)
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