题目内容

I haven’t seen you for quite some time. What ________ lately?

A. did you do
B. were you doing
C. have you been doing
D. had you done

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________ was the center of our planetary system was difficult concept to grasp in the Middle Ages.

A. It was the sun and not the earth
Being the sun and not the earth
C. That the sun and not the earth
D. The sun and not the earth

Shall we request the committee ________ our suggestion again?

A. to consider
B. consider
C. considering
D. considered

________ three whole years working on the design of the equipment.

A. It took the chief engineer
B. The chief engineer spent
C. The chief engineer took
D. It cost the chief engineer

Did you ask the teacher ________ the day before?

A. what was happened to her
B. what she had happened
C. what she happened
D. what had happened to her

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