Which of the following can NOT be used as subject?
| A．Mary | B．walking along the street |
| C．they | D．feed the animals |
—Excuse me. Can you please tell me _________?
—Sure. There’s a bookstore on River Road.
| A．how can I save money |
| B．how I can save money |
| C．where I can get some science books |
| D．where can I get some science books |
Mrs. Smith often goes to visit those AIDS patients in hospitals to_________.
| A．cheer her up | B．cheer up her |
| C．cheer them up | D．cheer up them |
We all know how wonderful you are. You needn’t _________.
| A．give up | B．show off |
| C．take the lead | D．fall behind |
There _________a girl singing next door. Can’t you hear her beautiful voice?
| A．must be | B．mustn’t be |
| C．can be | D．can’t be |
—Oh, the room is too dirty, Tony!
—Sorry, Mom. It _____ yesterday. I’ll do it right away.
| A．didn’t clean | B．isn’t cleaned |
| C．was cleaned | D．wasn’t cleaned |