We need clean air and water，so we protect the environment．（ ）
| A． |
can |
B． |
may |
C． |
must |
D． |
might |
will the match between HAS and BIG be held？﹣In our school stadium．（ ）
| A． |
When |
B． |
Where |
C． |
Why |
D． |
How |
It might be cool in the evening．You\d better take a（n） ．（ ）
| A． |
umbrella |
B． |
sweater |
C． |
wallet |
D． |
camera |
Don't ride too fast，David． the risk of an accident．（ ）
| A． |
Take away |
B． |
Write about |
| C． |
Think about |
D． |
Try out |
Tom and Jerry are very funny．I can't help when I watch them．（ ）
| A． |
singing |
B． |
laughing |
C． |
sleeping |
D． |
talking |