第1个回答 推荐于2021-02-26
It's ( time) (for ) (us ) (to ) (do ) morning exercises.
是某人做……的时间 It's time for sb. to do sth.
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第2个回答 2011-10-29
it's time of us to make morning exercise
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第3个回答 2011-10-29
It's time for us to do morning exercises.
第4个回答 2011-10-29
time for us to do