单项选择题

I would have told him the answer had it been possible, but I ______so busy then.

A．am
B．were
C．was
D．would be
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单项选择题
Mr. Wilson said that he did not want to ______any further responsibilities.
A．take on
B．get on
C．put up
D．look up
单项选择题
Bill doesn't ______what people say about him.
A．concern
B．matter
C．care
D．disturb
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