题目内容：

英语句子
1.driving the car or take the car isn't a good habit
2.getting plenty of sleep and do enough exercise is important
3.为什么用or
is anyone in (or) can i lock the door?
4.选哪个为什么
if you need some help ,why don't you ask me?
it's a very nice f you to say so,i suppose i ____
A.do B.need C .could D.must