单项选择题
You can see（）on the table
A.a packet of prawn B.two packets of prawn C.a packet of prawns
单项选择题 A: Are you free on Monday? B: No, I'm sorry, I'm busy.（）Wednesday?
单项选择题 （）mineral water is there in the bottle?
单项选择题 I'd been expecting（）letters the whole day, but there aren't（）for me
