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difficult 后加doing还是加to do
difficult 后加doing还是加to do 答案 加to do,It's difficult to do sth,做什么事很难.比如：It's difficult to say.很难说.It's difficult to explain it away.要把这（凝点）解释掉是不容易...
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without后面加什么
had to do without. 没有只好作罢 二、without可用作介词 1、没有；缺少： a family without a car. 没有汽车的家庭 2、没有陪伴；没有…： volunteered without hesitation;spoke without ...
without后面加to do吗
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