一篇初中完形填空的几个问题各题所给的A、B、C和D四个选项中选出最佳选项.A perfect holiday?Magin

一篇初中完形填空的几个问题
各题所给的A、B、C和D四个选项中选出最佳选项.
A perfect holiday?
Magine this:your parents go away on business,but you have to stay at home 46 .Would life be as easy as when your parents are around?Would it be a perfect holiday for you?
Zheng Chenyu says that she would worry “Where would I find food?How would I 47
it?” The 14-year-old girl says that she knows little about cooking.
“I can fill an 48 stomach with tomato and egg soup,but that's all.I think many of my classmates are the same.We wouldn't know what to do,or how to look after 49 ,” said Zheng.“And I’d forget 50 .I'd probably watch television and then burn the soup.”
Although Zheng believes that basic life skills,such as cooking and washing clothes,are especially important,she doesn't think teenagers get enough 51 .
“As soon as I leave home,I'll learn to cook.But now parents do almost everything for us.We're very lazy.” she said.
Most teenagers have only had time for their homework.They don't learn any life skills 52 they go to college.
However,Sima Yige doesn't think so.
“I think I’d be all right.I wouldn't just eat sandwiches or fruit.I know how to cook some simple dishes 53 my mum showed me,” the 13-year-old boy said,In his opinion,many teenagers 54 too much on their parents,and there is much more to learn than cooking like “tidying up your room or even 55 yourself properly”.
For most teenagers it wouldn’t be a holiday at all.
46.A.lonely B.alone C.quiet D.quietly
47.A.eat B.find C.cook D.take
48.A.empty B.full C.big D.small
49.A.ourself B.we C.ourselves D.us
50.A.anything important B.important anything
C.something important D.important something
51.A.prictise B.exercise C.practice D.knowledge
52.A.before B.when C.unless D.until
53.A.because B.while C.but D.or
54.A.live B.depend C.spend D.take
55.A.putting on B.wearing C.dressing D.dress
请帮我解释一下第48个空为什么选A,第51和第55个为什么选C