赞题库-背景图
单项选择题

______ what to do, the man telephoned the police.

A. Not known
B. Not knowing
C. Don't know
D. Knowing not
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热门试题

单项选择题When you ______ back to Beijing next month, let me know the exact date.

A. will come
B. had come
C. be coming
D. come

单项选择题I missed the morning train because I slept ______.

A. over
B. of
C. in
D. through