In order to________health,a person shoule eat wholesome food and do exercise.
问题描述：
In order to________health,a person shoule eat wholesome food and do exercise.
为何用maintain,但不能remain?
答
maintain是及物动词 vt.remain是不及物动词 vi.[W]remain后接health必须加介词1.维持;保持;使继续Ann and Mary maintained their friendship for the next thirty years.安妮和玛丽在此后的三十年中一直保持着她们之...