单项选择题

Standing beside the desk ______.

A) the secretary was
B) did the secretary be
C) was the secretary
D) did the secretary was
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单项选择题
I have no idea what Mary ______ at this time tomorrow.
A) will be doing
B) is doing
C) will do
D) does
单项选择题
Once ______ water, fish can' t live.
A) depriving of
B) depriving
C) deprived of
D) deprived
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