The air in Beijing is getting much ______ now than a few years ago.
| A．clean | B．cleaner | C．cleanest | D．the cleanest |
The teacher encourages her students _____ English as much as possible.
| A．to speak | B．speaking | C．speak | D．spoke |
I will stay at home and read books if it _______ tomorrow.
| A．is raining | B．rains | C．rain | D．will rain |
She _______ a lot of money on clothes.
| A．takes | B．costs | C．spends | D．buys |
We got mad ______ the team for losing the match.
| A．at | B．in | C．on | D．about |
I got home _____ they were having dinner.
| A．as soon as | B．while | C．because | D．After |