School students need eight hours of sleep a day,____? A.don’t they B.do they C.needn’t they D.need they
人气：104 ℃ 时间：2020-04-15 17:12:14
解答
a 这里的need做实义动词,所以反义疑问句借助doClever boys need never work hard, ____?A. needn’t theyB. need theyC. don’t theyD. do they 那这个呢bneed做情态动词主句有never所以视为否定，前否后肯，选吧
