题目内容
-Hi, Bill, you are late.
-Sorry, I would have come sooner. I ________ that you were waiting.
[ ]
A.haven't known
B.hadn't known
C.didn't know
D.don't know
答案:C
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Hi, Bill. I _____ you _____ in this city. How long have been here?
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A.didn't know; were |
B.don't kow; are |
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C.haven't known; are |
D.don't know; were |