What is worth doing deserves_______ with great efforts.A．to be doingB．to doC．to_刷题宝

题干

What is worth doing deserves_______ with great efforts.

A．to be doing	B．to do
C．to be done	D．done

上一题下一题 0.65难度单项选择更新时间:2018-11-30 08:45:36

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