不是说have a difficult time to do sth
the old man had a difficult time____
a,to make a living
b.make a living
c.making a living
d.making a life
原因
我选了A
顺便问一下：D为啥不可以呢?
人气：338 ℃ 时间：2020-04-17 14:28:54
解答
都是固定搭配.have a difficult time doing sth 和 make a living ,应该选C
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