you needn't clean it for the work is too ____(tire) 为什么用tiring 不用tired

must i clean my room now ?---no, you ___ .but you must clean it tomorrow .A.must B. mustn't C.need D.needn't写解释 you needn't clean it for the work is too ____(tire) 为什么用tiring 不用tired You needn't do it.同义句 must we clean the room right now?No,you ______.You ______clean it after lunchA.mustn't;can B.needn't;must c.practise D.be practiced Must we clean the classroom now?No,you needn't.It ______ after school.A.may clean B.must clean C.need be cleaned D.can be cleaned[正确答案是D,为什么不选C] Must I clean the room right now?--No,you______.You _____clean it after lunch.A.needn't can B.needn't may 到底是A还是B,说出理由!但我觉得不对 You don't _____need to clean the windows,for my sister did it earlierA.didn't need to clean B.needn't have cleanedC.must have cleaned D.cleaned it needn't be You ____ clean the room now.You ___ do it after supper.A.won't,must. B.don't have to,may. C.needn't,must. D.shouldn't,can为什么选B,其他三个为什么不可以?原因,谢谢! You needn't give it back to me=You needn't______it______me you must clean the classroom,you?a.needn’t b.mustn’t c.can’t d.don’ You needn't du it now （改为被动语态） It was very kind of you to clean the office,though youA.needn't do B.wouldn't haveC.didn't have to D.mustn't have done为什么选C It was very kind of you to clean the office, though you___A needn't do B wouldn't have C didn't have to D mustn't have done 选哪个,为什么现那个.谢谢 Must I clean the floor now?(A) No,you mustn't.(B) No,you needn't.并说明理由 It was very kind of you to clean the office,though you C_.为什么选didn't have to?选needn't do 难道不是‘虽然你“不必做”的意思吗?’ you ___ to school so early.it opens at 7A needn't come B don't need come C needn't comeingD needn't to come you()wash these clothes because they are clean.A.needn't to B.don't need to