They will not start the work _______ their teacher comes back.
| A．while | B．until | C．as soon as | D．if |
I don’t like people ______ talk much but do little.
| A．who | B．that | C．which | D．whose |
The earth will become worse and worse ________ we do something to stop her from being polluted.
| A．if | B．even if | C．when | D．unless |
— Can you come and play football with me?
—______. I have a lot of homework to do.
| A．Excuse me | B．I’d like to | C．I’m afraid not | D．It’s a pleasure |
--What would you do if you won a million yuan? -- __________.
| A．I shall give it to charities | B．I will buy snacks |
| C．I won’t put it in the bank | D．I’d give it to medical research |
—Excuse me, could you tell me ________ a book about music?
—Sure. They are on the second floor.
A. where can I buy B. where I can buy C. when I can buy D when I can buy