If you want to own an iphone 6 ahead, you'll have to make a(an) _____, or you will wait for some time.
| A．preservation | B．reservation |
| C．order | D．application |
Just as I got to the school gate, I realised I ______ my bank in the cafe.
| A．have left | B．had left |
| C．would leave | D．was leaving |
scientists have learned a lot about the universe, there is much we still don't know.
| A． | Once | B． | Since | C． | Though | D． | Unless |
If you come to visit China, you willa culture of amazing depth and variety.
| A． | develop | B． | create |
| C． | substitute | D． | experience |
— Can you come to a party on Saturday, Peter?
— Oh, ______I'm already going out, I'm afraid.
| A．what a pity! | B．don't ask! |
| C．how come? | D．so what? |
―I’ve got something weighing on my mind. Could you give me some advice?
―______. Tell me all about it and I’ll do what I can.
| A．Don’t mention it | B．No way |
| C．No problem | D．Forget it |