We must keep_______exercise to keep heathly为什么填doing

来源：学生作业帮助网编辑：作业帮时间：2024/05/07 07:14:24

Keep doing意思为保持做某事,注意没有keep to do

填doing . keep doing sth 意思是一直保持做某事

keep doing 是搭配，就像fihish doing 一样

We must We must value what we We must ( )(work)hard. we must call the We must help them? we must help it why we must sleep We must learn it we must find a We must purify the “we must study them.是“we must study them. we must keep our classroom( ). we must ( ) our school nuiforms ( we must start tomorrow morning. We must ___(be) careful. So We must Study hard we must do more英译汉 We must be strict_____ourselves_____our work.