初三中考英语英语选择题几道求解释

初三中考英语英语选择题几道求解释
1.May i go out and play this afternoon?----no,you（）.Work coms first.
A.needn't B.mustn't C.won't D.don't 我选了A但老师给的答案是B,求解这个用法
2.what did you say just now?---i （）you if you could follow me.A.said B.asked 这里我不知道有没有听错,老师选了A.我就奇怪有say sb的用法吗?
3.will you please let me have a look at the photos taken in the states?---sure.i'll（）them here to school tomorrow.A.bring B.take 带来学校好像不是挺对的,带去才合适点吧,我选了B、求正解
4.Alice,why didn't you come here yesterday? i（）,but my son suddenly fell ill and i had to take him to the hospital.A.did B.was going to 答案是A,这里有什么知识点需要掌握的提提
5.i think he lives （）No.386 West St.
are you sure of that?you‘d better make sure.
A.in B.at 这里应该选B吗?为什么