单项选择题

You ______ all those calculations ! We have a computer to do that sort of things.

A. needn’t have done
B. shouldn’t have done

C. must not have done
D. could not have done
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单项选择题
A. He watches the football match. B. He goes to the cinema. C. He works. D. He stays with friends.
A. He watches the football match.
B. He goes to the cinema.

C. He works.
D. He stays with friends.
单项选择题
A. New York. B. Boston. C. Washington. D. Germany.
A. New York. B. Boston.
C. Washington. D. Germany.
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