ThesmokewassothickthatIwasha

发布时间:2020-07-27 20:36:38

The smoke was so thick that I was having trouble ______.A.to breatheB.in breathC.with breathingD.breathing

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D解析have trouble (in) doing sth. 意为“做某事有困难”,have trouble with sth.意为“在某方面有困难”,都是常用结构,其中trouble可以用difficulty代替。
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