Lin Shuhao is one of the best basketball________in the NBA．
A．actors
B．players
C．waiters
D．writers
We are told ________ everywhere. It’s our duty to keep our school clean.
| A．not to make much noise | B．to throw waste paper |
| C．to draw | D．not to spit |
---Mind your steps, guy! Don’t you see the words “__________ the grass”?
| A．Keep off | B．Keep out |
| C．Take off | D．Take out |
Nobody can learn English well __________he works hard on it.
| A．if | B．unless |
| C．when | D．but |
I agree with most of what you said ,but I don’t agree with _______.
| A．everything | B．anything |
| C．something | D．nothing |
The ice changed ____ water ____ warm air around .
| A．in; into | B．into; in |
| C．to; into | D．into; to |