I guess there must be someone ________ outside the house. Let's stop to listen.A_刷题宝

题干

I guess there must be someone ________ outside the house. Let's stop to listen.

A．speaks

B．speaking

C．speak

D．spoke

上一题下一题 0.85难度单选题更新时间:2018-10-04 11:16:52

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