补全下列各组对话，每空一词。
1.—_________ _________ help you?
—I'm looking for a white shirt.
2.—_________ _________ do you want?
—I want yellow.
3.—Do you like the green one?
—No,_________ _________. I like red better.
4.—Is the black one Ok?
—No, it's_________ _________ .I want a cheap one.
5.—_________ _________ is the sweater?
—It's 50 dollars.
6.—I'll take it. Here's the money.
—_________ _________ _________.
