You may use the room as you like,______ you clean it up afterwards.
| A．as though | B．so long as |
| C．now that | D．as far as |
You'd better write down the phone number of that restaurant for future.
| A． | purpose | B． | reference | C． | progress | D． | memory |
By 16:30,was almost closing time, nearly all the paintings had been sold.
| A． | which | B． | when | C． | what | D． | that |
--Have you paid? What's my share of the bill?
--. It wasn't very much.
| A． | Don't worry about it. | B． | It's my share |
| C． | None of your business. | D． | It's up to you. |
--Look! Somebody the sofa.
--Well, it wasn’t me. I didn’t do it.
| A．is cleaning | B．was cleaning | C．has cleaned | D．had cleaned |
It suddenly occurred to himhe had left his keys in the office.
| A． | whether | B． | where | C． | which | D． | that |