三道英语选择题,请帮我选出正确答案,及说明原因,

题目

三道英语选择题,请帮我选出正确答案,及说明原因,
Who was the first student to_ today?
Perer.He's always the first to _ school.
a.reach; get to b.reach:arrive c.arrive:get to d.get;reach
I think I should do what I can_him later?
You should._ more exercise is good for his studies.
a.help; do b.help;doing c.to help;do d.to help; doing
Would you mind going fishing with me?_
a.no,not at all b.yes i like c it doesn't matter

答案

CDB
第一个空：arrive表达到达的意思时可作不及物动词,其他的不行
第二个空：因为有school这个宾语,所以只能用reach或者get to,arrive缺介词at
第三个空：不需要解释吧.就是do what i can to help him
第四个空：doing more exercise 动名词作主语,is是系动词,good for his studies是表语.
第五个空：应该是yes,i'd like to.表示我非常愿意去.a的否定回答太粗鲁.c的回答是：没关系.没有意义.