1 which of the two books do you prefer?

1 which of the two books do you prefer?
- —,because they are in Engilsh,that is ,they are difficult
A both B either C none D neither
答案选C是为什么,none不是三者以上吗,可是题目中不是 the two books吗?我选D
2 The thieves raw away separately ,—— carrying a bag of money
A all B each Cevery D either
为什么呀,为什么不可以C呢?
3 If he goes on running for——two hours,he ——like that for four hours
A another；will have been running
这是高中题,我还没学,A中的will have been是什么时态啊?
4 -He was nearly killed by a car once
-Oh,when was ——exactly?
-It was in 2002——he was riding a bike on the way
B that; when C that; that
答案是B为什么呢额,我选的c哦
5 he is a strict but kind captin ,_all the sailors respect
A one C the one who
为什么呢啊,我选c,我看不懂
请写写清楚,为什么.