This book______Tom’s,because his name is on the book.
| A．maybe | B．may be | C．must be | D．must |
______should not be______to go out at night.
| A．Twelve-years-old,allowed | B．Twelve-year-olds,allowed |
| C．Twelve-years-old,allow | D．Twelve-year-olds allow |
—____do you improve your English? —I improve it___listening to tapes.
| A．How, with | B．What, with | C．How, by | D．What, by |
----Could you please sweep the floor?
---_____________. I have to do my homework first.
| A．Yes, sure. | B．Why not? | C．Sorry, you can’t. | D．Sorry, I can’t. |
You shouldn’t drink ______water before sleep.
| A．too much | B．too many | C．much too | D．many too |