while in bed we must not cover our head to get enough frest air 翻译

while in bed we must not cover our head to get enough frest air 翻译 while in bed,we must not cover our__,because our lungs need to get enough fresh air.A.body B.headsC.legs Why must we go to bed? must stay in bed可以说成stay You must stay in bed.的意思 It means that we must go to bed early and get up early in the morning.的中文 in bed 是同样的道理吗?但是He must stay in bed.怎么翻译呢? He is ______(terrible) ill.He must stay in bed. How____________________?He must stay in bed for five days. You must stay in bed.的否定形式是什么 you must （ ）《stay》 in bed for another two days. 排序：must,you,in,stay,for,another,bed,days,tow. tom is till .he must stay ( ) for tow days a.in zhe bed b.in bed c.on bed We must stand in line.改为祈使句 We must be quiet in the library. Even in we must learn to smile, we must keep( ) in the hospital we must help the animals in d_____