题目内容

When()that the principal was very strict, he didn't dare go to the office alone.

A. tell
B. told
C. was telling
D. telling

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There()an old man and two bodyguards standing on the platform.

A. to be
B. being
C. is
D. are

若P(2,-1)为圆(x-1)2+y2=25的弦AB的中点,则直线AB的方程是()。

A. x-y-3=0
B. 2x+y-3=0
C. x+y-1=0
D. 2x-y-5=0
E. A、B、C、D都不正确

She shows little regard for the feelings of others and does exactly what she wants to().

A. feeling
B. love
C. consideration
D. sense

-- Must I finish it before 10 o'clock -- No, you().

A. mustn't
B. needn't
C. can't
D. don't

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