—What are you doing?
I’m looking ___ the children. They should be back for lunch.
| A．after | B．at | C．for | D．up |
Children are often warned ______ with fire.
| A．not to play | B．to play | C．don’t play | D．doesn’t play |
By yesterday, the plane ______out of view for more than a month.
| A．is | B．has been | C．was | D．had been |
Have sports training every day, ______you won’t be healthy in the future.
| A．because | B．or | C．unless | D．since |
I have got two tickets ______ tomorrow’s evening show. Would you like to come with me?
| A．in | B．by | C．from | D．for |
Our English ______ far better in a month if we try harder.
| A．becomes | B．will become | C．has become | D．became |