单项选择题

Everyone should keep a sense of responsibility()what he is to do.

A. of
B. for
C. with
D. to

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单项选择题

What did the teacher say to you just now She asked me ().

A. whether I had finished my work or not
B. whether or not had I finished my work
C. if my work had finished or not
D. if or not I have finished my work

单项选择题

When () the education systems of China and Britain, the professor gave his own comment.

A. asking to be compared
B. asked him to compare
C. asking him to compare
D. asked to compare