---Don't skate on the lake!---Why not? Isn't it thick enough___________?A．to ska_刷题宝

题干

---Don't skate on the lake!
---Why not? Isn't it thick enough___________?

A．to skate

B．skating on

C．skating

D．to skate on

上一题下一题 0.65难度单选题更新时间:2014-05-06 08:37:08

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