Cycling is a good way of exercise and is quite easy _________. A．to do B．to be d_刷题宝

题干

Cycling is a good way of exercise and is quite easy _________.

A．to do

B．to be done

C．doing

D．being done

上一题下一题 0.85难度单项选择更新时间:2013-01-29 08:40:32

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