完形填空． 先通读下面的短文，掌握其大意，然后从下面四个答案中选择可以填入相应空白处的最佳答案。
Do you like shopping on the Internet? I like to buy books online(在线的). Usually, the books online aren’t  ________ . You needn’t pay(付钱) a lot. When I want to know something about a book, I write an e-mail to the online shop for ________   . I am shy(害羞). It is not easy for me to talk to the shopkeepers in real(真实的) shops.
Sometimes online shops have pictures of the book. They can show you some pages of the book, too. I think this is very   ________  . I don’t like to read books in shops because the shopkeepers may come and talk to me. I don’t know  ________ to say to them.
I can shop at midnight   ________ I want to. Real shops close at nine o’clock in the evening. Some people may worry that the postman(快递员) may damage(损坏) the things they ________  from online shops, but I don’t worry about that.
Some people say that shopping in real shops is good because you can go with your friends and ________   many different things. They call this window shopping. I don’t have any friends and I don’t like to talk too much---it makes me   ________ .
I am   ________  my grandmother how to shop online. She cannot walk very far so it will make shopping easy for her if she shops online. My brother   ________   wants to learn how to do it. He is very busy most of the time. When he has a little free time, he can shop online.

A．expensive B．cheap C．high D．much

A．a reason B．an idea C．a question D．an answer

A．careful B．helpful C．colourful D．beautiful

A．what B．how C．where D．why

A．and B．but C．if D．when

A．have B．borrow C．buy D．sell

A．look after B．look like C．look for D．look at

A．tired B．cry C．happy D．smart

A．asking B．studying C．teaching D．giving

A．again B．also C．too D．never