I think _______ necessary for you _______ breakfast.
| A．this; have | B．that; to have |
| C．it’s; to have | D．it’s; have |
Stop ______ about the traffic. Just think about what we can do to improve it.
| A．complain | B．to complain |
| C．complaining | D．complained |
I can't connect my computer to the Interrnet. There must be ______ wrong with it.
| A．something | B．everything |
| C．anything | D．nothing |
Mr. Li asks the students ______ in the river, because it’s too dangerous.
| A．swim | B．to swim |
| C．not to swim | D．to not swim |
interesting subjects they are !
| A．What | B．How | C．What an | D．How an |
To live a green life, we should try to save ____ energy and produce＿＿pollution.
| A．more; less | B．less; more |
| C．more; fewer | D．most; least |