While he was ______ about in the street, Mary came up to him.A．wanderingB．wonder_刷题宝

题干

While he was ______ about in the street, Mary came up to him.

A．wandering

B．wondering

C．wondered

D．wandered

上一题下一题 0.85难度单项选择更新时间:2010-09-13 03:57:39

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