根据对话情景和内容，从对话后所给的选项中选出能填入每一空白处的最佳选项。选项中有两个为多余选项。
Marry: Tom, I've just moved to a new house．
Tom: 小题1:
Marry: Thank you, and I'd like to buy a new television set．
Tom: 小题2:
Marry: A color TV set, of course．But I'm not sure about the size．Maybe we should buy a big one．If we buy a small one, we might have to change it in a few years' time for a big one．小题3:
Tom: In my opinion, I don’t think it necessary to buy a very big one．
Marry: 小题4:
Tom: Yes．As we know, your sitting room isn’t very big．If you put in a very big television set, it will be bad for your eyes．Besides, a smaller TV set can have clear pictures．
Marry: 小题5: I’ll think about it．
Tom: You’d better make a quick decision because the price may go up soon．
A．Wow, how I envy you!
B．What is your opinion?
C．What kind of television do you want to buy?
D．Mm, that’s quite true．E．Why do you think so?
F．Is there any reason?
G．Really? Congratulations!
小题1:G
小题2:C
小题3:B
小题4:F
小题5:D
题目分析：
小题1:G 根据上文地方搬了新家，那么应该表示祝贺。故G正确。
小题2:C 根据下文的回答A color TV set,说明上面是询问对方的电视机。故C正确。
小题3:B 根据下文的In my opinion…说明是征求对方的意见，故B正确。
小题4:F 根据下句，是给出了别的原因，故F正确。
小题5:D 根据I’ll think about it．说明他认同对方的观点，会仔细考虑的。故D正确。
点评：本题集中考查了在上下文中根据回答和问题得出的交际用语。难度较小。