—The air pollution is terrible.
— It will be worse ________ we take action to protect the environment.
| A．if | B．unless | C．until | D．When |
Your sweater looks smart. Where _________ you __________ it?
| A．do; get | B．did; get | C．will; get | D．have; got |
Miss Zhang, the most beautiful teacher, _____________ many flowers and letters these days.
| A．received | B．will receive | C．was receiving | D．has received |
_________ your name on the paper and you can get a magazine.
| A．Cut down | B．Look down | C．Turn down | D．Put down |
The clothing store _____________ a sale. The clothes there are very cheap.
| A．has | B．had | C．is having | D．was having |
________________ a book in the library, enter a key word into the computer.
| A．To find | B．Find | C．To write | D．Write |