The poor couple know____is no good complaining about their family background
The poor couple know is____no good complaining about their family background
为什么用it啊
人气：464 ℃ 时间：2020-09-30 20:09:37
解答
it在这里指代complaining about their family background 作后面从句的形式主语为什么不能用what 作主语啊it is no good+doing固定句型
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