不应该选B吗?为什么选C呀T^

不应该选B吗?为什么选C呀T^ 为什么不选c而选b啊? 它是对t积分应该要凑一个a啊? 16.He has worked in this school for many years,_______ he?A.has B.hasn’t C.is D.isn’t为什么选A,而不是B,前面肯定,后面不应该否定吗? we'll ll have a picnic if it -------- rain tomorrow.don't B：doesn't C:won't D:isn't正确答案应该选B,我记得凡是以tomorrow这个单词结尾的不都是一般将来将来时吗,为什么不选C呢? Only when you have learned grammar well _____write correctlyA.you will B.you can C.can you D.can't you(应该选什么?为什么?）不应该在句首倒装吗？ He must have lost the key the day before yesterday,_____?A.must he B.hasn't he C.needn't he D.didn't he答案应该选D,为什么不选B?请说明原因, 急 Do you like these computers?No,I don't like_______A all them B them all C some D any为什么我选D是错的,不应该选D吗但是为什么？ he must have finished his project last week,——?A.hasn't he B.didn't he C.mustn't he D.hadn't he答案上是选B,为什么不选A?为什么不选D呢? 前面有个have不应该用完成时吗? would you come back later next time?no,i ___.a.shan't b.wouldn't c.won't d mustn't 选C为什么不选B? you had a good time last night,_____?A hadn't you B didn't you C haven't you D don't you应该选哪个?为什么? You had a good time last night,____?A hadn't you B didn't you C haven't D don't you 应该选哪个?为什么? your telephone number again?t__quite catch it its 9568442a.didnt b.couldnt c.dont d.cant不对应该选哪个?为什么? 1.------May I go now? -------No,you ________.A.mustn't B.needn't C.mightn't D.won't 为什么选A,不选B? I don't know which of the ( )books is the better one.So I shall read ( ).a.two,all b.three,both c.不填,all d.不填,both应该选哪个,为什么? i don't like swimmingI don't like swimming.He doesn't like swimming,____.A.also B.either C.too D.neither为什么?为什么不选C. Will you stay for lunch?Sorry,I__.My mother is ill at homeA..mustn’t B.can’t C.needn’t D.won’t为什么不选B I bought this watch here yesterday,but it ____work.A won't B didn't C doesn't Dwouldn't为什么不选B 1.I (B ) some fish.A.is B.has C.have 2.I (C ) like winter.A.don’ B.doesn't .C.am第一题不应该是主语＋BE动词＋其它吗?我认为应该选A.第二题也讲一下为什么选A.