—Excuse me. Is the library open all day?
— . Only from 9 a. m to 4 p.m.
| A．Yes, of course | B．That’s right |
| C．Sorry, I’m afraid not | D．Sorry, I’m not sure |
（贵州贵阳）In China and some other countries，it is impolite to speak loudly________you are having a meal．
A．before
B．while
C．after
-Do you________your son after school？
-No．He comes back home on the school bus．
| A． | pick up |
| B． | look after |
| C． | drop in |
| D． | send for |
The thieves ran away when the burglar alarm（防盗警报器）________．
| A．went away |
| B．went out |
| C．went off |
| D．went through |
Little Tom________computer games when his mother got home．
A．is playing
B．plays
C．was playing
—Why are you so tired these days？
—Well，I have________homework to do．
| A．too much |
| B．too many |
| C．much too |
| D．many too |