We must keep_______exercise to keep heathly为什么填doing
问题描述:
We must keep_______exercise to keep heathly为什么填doing
答
keep doing 是搭配,就像fihish doing 一样
答
填doing . keep doing sth 意思是一直保持做某事
答
Keep doing意思为保持做某事,注意没有keep to do