We came here three years ago.的同义句

问题描述:

We came here three years ago.的同义句
He feels tired at time.的同义句
He feels tired _____ ______ ______ ______.

We came here three years ago.
同义句:We have been here for three years.
He feels tired at time.
同义句:He feels tired once in a while.
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