The smoke was so thick that I was having trouble ______.A．to breatheB．in breathC_刷题宝

题干

The smoke was so thick that I was having trouble ______.

A．to breathe

B．in breath

C．with breathing

D．breathing

上一题下一题 0.4难度单选题更新时间:2018-02-28 07:18:33

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