Jack is going to _______________a hobby next year.
| A．look after | B．take up |
| C．find out | D．write down |
If we try our best, we can finish the work with _______people and ______money.
| A．more, more | B．fewer, less |
| C．less, less | D．fewer, fewer |
There _____________ more trees if we all take care of our environment.
| A．will have | B．are |
| C．will be | D．is going to |
I can see _________birds in the sky.
| A．a hundred of | B．hundred of |
| C．two hundreds | D．hundreds of |
— __________will you come back to our city?
—In a week.
| A．How soon | B．How long |
| C．How far | D．How often |