The doctor are busy ____ the dying man.a:save b:saved c:savi
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The doctor are busy ____ the dying man.a:save b:saved c:saving d:to save 我选的是d答案选a 为什么?
![The doctor are busy ____ the dying man.a:save b:saved c:savi](/uploads/image/z/3787437-21-7.jpg?t=The+doctor+are+busy+____+the+dying+man.a%3Asave+b%3Asaved+c%3Asavi)
应该选c
be busy doing sth.
再问: 不是be busy at doing sth吗,这个at是不是可以省略呢
再答: 木有be busy at doing sth 只有be busy (in) doing sth
be busy doing sth.
再问: 不是be busy at doing sth吗,这个at是不是可以省略呢
再答: 木有be busy at doing sth 只有be busy (in) doing sth
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