The price has been .Can you go and buy one?
| A．gone up | B．brought up |
| C．gone off | D．brought down |
They are putting too much carbon dioxide into the atmosphere, ______ prevents heat from escaping from the earth into space.
| A．what | B．that | C．which | D．who |
----I’m thinking of the test tomorrow, I’m afraid I can’t pass this time.
----! I’m sure you’ll make it.
| A．Go ahead | B．Good luck | C．No problem | D．Cheer up |
I bought a sweater for only 50 yuan yesterday; it was a real .
| A．trade | B．exchange | C．bargain | D．business |
----Say, Jane, will you come with me to the game Friday?
---- , Bob, but I promised Mary I’d go with her.
| A．Forget it | B．Thanks | C．Take it easy | D．My pleasure |
Not only late, he also forgot his book.
| A．had he turned up | B．he had turned up |
| C．he turned up | D．did he turn up |