The river near our village is about long．（ ）
| A． |
three﹣hundreds﹣meters |
| B． |
three﹣hundred﹣meter |
| C． |
three﹣hundred﹣meters |
| D． |
three hundred meters |
Mom，could I watch the game show now？
Sorry，you can't watch it ________you clean your room．（ ）
| A． |
when |
B． |
if |
C． |
after |
D． |
until |
Look，the light is still on in Helen's office．
Maybe she_________ her work yet．（ ）
| A． |
doesn't finish |
B． |
won't finish |
| C． |
hasn't finished |
D． |
didn't finish |
If more people give up driving cars，the air will get much in a few years．（ ）
| A． |
clean |
B． |
cleaner |
| C． |
the cleaner |
D． |
the cleanest |
He climbed so fast that he reached floor in two minutes．（ ）
| A． |
nine |
B． |
the nine |
C． |
the ninth |
D． |
ninth |
Tim，we're going to Beijing for vacation，please some information online．（ ）
| A． |
look for |
B． |
look out |
C． |
look after |
D． |
look up |