单项选择题

Not until I graduated from the college ______ how much time I had wasted.
A) have I realized C) I have realized
B) did I realize D) that I realized,
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单项选择题
Do you know the man ______ next to the general manager A) sits C) to sit B) sat D) sitting
Do you know the man ______ next to the general manager
A) sits C) to sit
B) sat D) sitting
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