补全对话
从方框中选择最佳选项完成对话，有两项多余
a. That's OK.
b. Because it is fast (快的) and easy.
c OK, then click "save" again.
d. I like it very much.
e. Yes, I have one.
f. How often do you use your computer?
g. What do you usually use your computer for?
A: Do you have a computer at home?
B: ____It's a birthday present from my uncle.
A:____
B: I usually use it to surf (冲浪) the Internet.
A: Why?
B:____
A:____
B: Every morning.
A: How do you like your computer?
B:____ It's very useful.
