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be good for的用法
Morning exercises _____(be) good for us.
Doing Morning exercises _____(are) good for us.

人气:147 ℃ 时间:2026-03-15 18:38:59
解答

Morning exercises _are____(be) good for us.
主语Morning exercises 是复数形式,谓语用复数are
Doing Morning exercises ___is__(are) good for us.
主语Doing Morning exercises 是是动名词短语,谓语一般用单数
be good for 对.有好处
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