Air is to us _____ water is to fish.
| A．what | B．that | C．which | D．is that |
Trees are good for man. We can’t plant them ______ many.
| A．so | B．such | C．too | D．enough |
—I saw Mr. Black on the playground this morning.
—You ________. He’s still on holiday in Sanya.
| A．can’t | B．couldn’t have |
| C．mustn’t have | D．needn’t |
The officer commanded that everyone passing by________ that day.
| A．being searched for | B．would be searched |
| C．be searched | D．must be searched for |
We ________ him to give up the plan, but he turned a deaf ear to us.
| A．persuaded | B．tried to persuade |
| C．suggested | D．did persuade |
The professor insisted ____ with his family rather than ____ to another city.
| A．on living; moving | B．to live; moving |
| C．on living; to move | D．to live; to move |