－Do you mind my opening the window?
－______. Please do it now.
A. Of course not. B. Yes, I do. C. Certainly
The classroom is very _______ because some students are making some _______.
| A．noise; noise | B．noisy; noise | C．noisy, noisy | D．noise; noisy |
－Do the interesting books belong to________?
－ No, they are the __________ .
| A．yours; twins’ | B．you; twins’ | C．you, twins | D．yours; twins |
We had fun________ in the swimming pool last Sunday.
| A．swim | B．swimming | C．swam | D．swims |
There must be a boy ________ basketball outside the door. I hear him crying.
| A．play | B．plays | C．to play | D．playing |
Have you done ____ to improve the environment ?
| A．something useful | B．anything useful |
| C．nothing useful | D．useful anything |