---Someone is knocking at the door. Who may it be?
---It ______ be Tom. He is still in the school.
| A．can’t | B．mustn’t | C．couldn’t | D．may not |
Tina can _________ her bedroom by herself. She doesn’t need her parents’ help.
| A． |
get up |
B． |
clean up |
C． |
cut up |
Running is getting popular. It is good for our health and it costs _________.
| A． |
nothing |
B． |
everything |
C． |
anything |
There is _________ river near our school. We never throw rubbish into it.
| A． |
the |
B． |
a |
C． |
/ |
Tony turns off the shower to save _________ while he is washing his hair.
| A． |
time |
B． |
paper |
C． |
water |
When we read books in the library, we should keep _________ there.
| A． |
lovely |
B． |
tired |
C． |
quiet |