单项选择题
A: Fill it up with regular gasoline, please.B: ______A....
单项选择题A: Fill it up with regular gasoline, please.B: ______
A: I really must be going now. B: ______A.That's very n...
单项选择题A: I really must be going now. B: ______
A: I'd like to have an economy ticket with an open retu...
单项选择题A: I'd like to have an economy ticket with an open return to Chicago next Monday.B: ______