第一个正确，用单数。形如have difficulty in doing /have trouble in doing ，其中in 可以省略
1.是have problem (in) doing sth.还是have problems (in) doing st
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相关问题
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have problems in doing sth 和have a problem in doing sth
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是have some problem doing sth.还是have some problems doing sth.
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have problems in doing sth中，介词是用in还是on
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have problems to do,have problems doing sth,have problems wi
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到底是have problem doing 还是 have problems doing
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have problem in 还是of
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英语改错；do you have any problems in your homework?
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have problems with…… have problems in…… 哪个是正确的,意思
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have sth do还是have sth to do
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做某事有困难have a trouble to do sth.还是have a trouble in doing sth