He left school and began work ______ twelve．（ ）
| A． |
at the age of |
B． |
at the beginning of |
| C． |
at the top of |
D． |
at the bottom of |
﹣ are these bananas？
﹣﹩3.99．（ ）
| A． |
How much |
B． |
How long |
C． |
How heavy |
D． |
How big |
Paul's mother is a nurse．She works a hospital．（ ）
| A． |
with |
B． |
on |
C． |
of |
D． |
in |
My brother will come to see me tomorrow．I'll meet at the airport．（ ）
| A． |
her |
B． |
you |
C． |
him |
D． |
them |
﹣﹣﹣May I do some sports after finishing my homework？
﹣﹣﹣_____．It is good for your health．（ ）
| A． |
I hope not |
B． |
Sorry，you can't |
| C． |
Of course |
D． |
Yes，I'd love to |
Our geography teacher told us to _____ more information about our city and share it next week．（ ）
| A． |
find out |
B． |
keep away |
C． |
turn off |
D． |
use up |