—How much difficulty did you have this problem? —None ．It's quite ea_刷题宝

题干

—How much difficulty did you have this problem? —None ．It's quite easy．

A．to solve

B．solved

C．solving

D．solves

上一题下一题 0.65难度单选题更新时间:2018-12-17 02:30:52

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