— Our classroom every day．
— So it is. It is our duty to keep it clean and tidy.
| A．cleans | B．is cleaning |
| C．is cleaned | D．was cleaned |
—I called you at 4:00 yesterday afternoon, but no one answered.
—Sorry, I ______ with my friends at that time.
| A．swim | B．swam | C．will swim | D．was swimming |
You won’t feel happy at school ______ you get on well with your classmates.
| A．though | B．when | C．unless | D．because |
I have some problems with my English writing. Can you give me some________?
| A．advice | B．decisions | C．information | D．messages |
—Will you take part in the English speech competition tomorrow?
—Sure. I see as a chance to prove_________.
| A．myself | B．me | C．yourself | D．you |
—What do you want to be in the future，Nick?
—I want to be__________ pilot. It is________ exciting job.
| A．a；a | B．a；an | C．the；an | D．a；the |