I________all the exercises before my teacher collected the exercise books．
| A．have finished |
| B．finished |
| C．had finished |
| D．finish |
— We can sell the waste for recycling such as glass, paper and metal.
— ____
| A．Not at all. | B．So I do. |
| C．That’s a good point. | D．Are you crazy? |
We should buy things ____ locally.
| A．producing | B．are producing | C．are produced | D．produced |
It’s impossible ____ a taxi on such a rainy day.
| A．for getting | B．of get | C．to get | D．to getting |
____ to the meeting on time tomorrow. It’s very important.
| A．Don’t come | B．Do come | C．Not come | D．Coming |
It’s hopeless to finish the work today, ____?
| A．isn’t it | B．is it | C．doesn’t it | D．does it |