Everyone should play a part in _____the earth.
| A．save | B．saves | C．saving | D．saved |
–Can you go shopping with me tomorrow?
--_____. But I have a lot of work to do.
| A．I’d like | B．I’d love to |
| C．Of course not | D．That’s all right |
My mother is busy_____ the room.
| A．clean | B．to clean | C．cleaning | D．cleans |
The harder we work, the_____ result we will get.
| A．faster | B．worse | C．better | D．best |
–The classroom is_____ clean_____ it was yesterday.
--Sorry, I forgot to clean it.
| A．as, as | B．so, as | C．not so, as | D．more, than |
Every day the boss makes him_____ 12 hours.
| A．work | B．to work | C．working | D．works |