1 C 你应该听老师的建议 否则你将会落后 根据句子意思选的
2 He would like his son to go to America
want to do sth. = would like to do sth. 想要做某事
3 What do you want me to do 理由同上
4 what should they do talk about their problems 相当于对做什么提问
5 who did you argue with last week my best friend 是对宾语提问 用who 而原句是过去时 所以提问也要用过去时