--Did you ever ________ trees on the hill?
--No, never, I know it's very important to protect our environment.
[ ]
|
A .cut down |
B .put down |
C .slow down |
D .write down |
He wrote a book ________ how to use a computer.
[ ]
|
A .in |
B .on |
C .with |
D .about |
Pandas live ________ bamboo and they live ________ the forests and mountains.
[ ]
|
A .in, in |
B .on, in |
C .on, on |
D .in, on |
Be careful. It's ________.
[ ]
|
A .danger |
B .in danger |
|
C .dangerous |
D .in dangerous |