英语选择题、哥哥姐姐帮我~

英语选择题、哥哥姐姐帮我~
_____you ______(watch)the football match last night?
No.I______(do) my homework the whole evening.
答案是did ,watching,was doing 第一个空为什么不是were
He ____the sky and was lost in his thought.
A looked B looked up at C looked out D looked into
解题思路
Don't worry too much.You've got______cold
A a bit B a bit of C a little D a little of
C为什么不可以

第一个题：第一个空如果是did那么第二个空只能填watch动词原型,不然只能用were doing.按照英语习惯一般是 Did you watch the football game match last night?侧重点是问你昨晚有没有看足球赛.
Were you watching the football game match last night?意思是：你昨晚一直在看足球比赛吗?
这两种填法在语法上都没有错,主要看上下文句义来选择.我见过的题大部分都是Did you watch...
No.I was doing...选择进行时的原因是根据the whole evening.只有进行时才能体现出在那段时间“我”一直在做某事.
第二题：考的是介词搭配不同的释意.
look up at 仰头向上看；
look out (表示警告,尤指有危险）小心,当心,留神 eg,Look out!There is a car coming.当心!有车来了.
look into sth 意思是to examine sth 调查；审查 eg,A working party has been set up to look into the problem.已成立一个调查小组来调查这个问题.
PS:在考试时如果你一时记不起这些意思或者不知道,那么就先仔细读完题目主句,大概猜测下句义,把这四个选项一个个放进去对比排除.在“He ____the sky and was lost in his thought."这句中,你能知道他是---天空,陷入沉思中.天空只能是抬头看上去,介词out有看向外面的意思,而into 则是向里面看,在这里只有up 有向上的意思.
第三题：因为一般情况下可以互换,但是感冒是a bit of的固定搭配!
a bit和a little通常可互换.但在修饰名词时有区别：a little可直接修饰不可数名词；而a bit则要与of搭配才能修饰名词,如：a little money／a bit of money,a little cold／a bit of a cold（有点感冒）,如果a little与of搭配,则a little用于指后文,即of后的名词为特指.如：I’ve only read a little of the book.（北京四中网校一老师给的解释）
另一个有意思的解释：catch a bit of cold 意思是被一点寒冷传染感冒了,而 catch a little cold 则是被一个小小的寒冷传染感冒了,两者不能说谁对谁错,相对来说呢,catch a bit of cold 更准确!
PS:a bit与a little 基本同义 都是：有点；一点的意思.
1、a bit和a little在肯定句中修饰动词、形容词、副词和比较级时可以互换,表示"一点儿"的意思.
2、a bit和a little在否定句中的意思恰恰相反,not a bit相当于"not at all"(一点儿都不);not a little相当于"very(much)"或"extremely"(很、非常).
以上仅作参考.
我翻了三本大字典（包括英英字典）查找的,