Of the 9500 drivers （）since the beginning of the year, 23% were found （）in road knowledge.

单项选择题—Could you please tell me（） —Go upstairs and turn left.

A. what is the teacher’s office
B. what the teacher’s office is
C. where is the teacher’s office
D. where the teacher’s office is

单项选择题—Do you mind if I smoke —（）.

A. Why not
B. Yes, help yourself.
C. Go ahead.
D. Yes, but you'd better not.

单项选择题He said, We （）be proud of working hard. We mustn't be lazy.

A. must
B. needn't
C. may
D. can't

单项选择题（）the temperature might drop, coal was prepared for warming,

A. To consider
B. Considered
C. Considering
D. To be considered

单项选择题—The blue skirt looks very nice. May I（） —Yes, please.

A. try them on
B. try it on
C. take them off
D. take it off