Because the shop_______, all the T-shirts are sold at half price.
| A．has closed down | B．closed down |
| C．is closing down | D．had had closed down |
I have _____ all my papers but I still can't find my notes．
| A．looked through | B．looked for | C．looked after | D．looked out |
—Now that you like computers very much, isn't that a good idea to get a ____?
—Well, I'd like to, but I can't afford such an expensive computer at present.
| A．one | B．them | C．it | D．that |
I have many friends, ____ some are businessmen．
| A．of them | B．from which | C．of who | D．of whom |
The car has been well maintained and is _____ excellent condition．
| A．in | B．under | C．on | D．with |
—Why was Professor Johnson unhappy those days?
—Can't you see it clearly? The only reason was that the theory he stuck to_____ wrong．
| A．proving | B．being proved | C．proved | D．was proved |