情景对话

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。

W：　　1　　

M：Yes, I am looking for a nice shirt for my son．

W：　　2　　

M：Blue．Boys get dirty easily, don't they?

W：That's right．But…what size would you like?

M：Size 6．

W：　　3　　

M：It looks very nice．How much does it cost?

W：It's ＄35．

M：Oh, 　　4　　

W：　　5　　 We have sold a lot of these．

M：Yes, it's very nice．I think I will take it．

A．What colour do you prefer?

B．I prefer the colour．

C．May I help you?

D．How about this one?

E．That's expensive．

F．I think it is very cheap．

G．How about this one? It's only ＄16.66．

请将下面作文中划线的句子改为被动语态，体会一下被动句的妙用。

　　①People generally believe that there is a good supply of fresh water．To our disappointment, the fact is just the opposite．

　　As we can see, the world population is growing rapidly day by day．②So we need enough fresh water to feed such a big population．What's more, with the development of industry, factories and vehicles produce poisonous gases or wastes, which consequently results in the pollution of water．③Though the water looks fresh, we can no longer use a good amount of it．Only quite limited fresh water resource is available to human beings．So it's high time for us human beings to take quick action to protect water resource．Stop pollution and save water, otherwise, we cannot survive on the earth．