---How is ______ book you read last week?
---It is ______ useful book.
| A．the, a | B．a, the | C．the, an | D．a, an |
－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 |
—Who helped Betty tidy up the bedroom just now?
—________. She cleaned it all by herself.
| A．Somebody | B．Nobody | C．Everybody | D．Anybody |