“One must work hard,------------?"A.needn't you B.needn't he

“One must work hard,------------?"A.needn't you B.needn't he you must clean the classroom,you?a.needn’t b.mustn’t c.can’t he _____go to work at weekend a needn't to b doesn't need to You () go to work before eight tomorrow A.needn't to B.don't You ()leave,do you?But they must leave now.A.needn't to B.do You needn't finish your work now. you needn't _____(work) late tonight. ___I take a bus?no,you needn't.a,must b,can c.may dmight _____ i finish my homework now?no,you needn't.a.must b.may c he must be from America,（ ） he?A.mustn't B.needn't C.is D.be You [ ] worry about him.He will get well soon.A.needn't B.ca unless用法you old computer doesn't work/you needn't buy a new