Let’s try our best ________ the earth.
A protect B. to protect C. Protects
All of my classmates enjoy ________ music．
| A．listen to |
| B．to listen to |
| C．listens to |
| D．listening to |
________，she works hard every day．
| A．Buy a new house |
| B．Buying a new house |
| C．Buys a new house |
| D．To buy a new house |
Those books are all free；take any of them you like．(选出画线单词的正确意思)
| A．有空的 |
| B．免费的 |
| C．付费的 |
| D．崭新的 |
Please turn ________ left and the library is ________ your right．
| A．／；on |
| B．to；／ |
| C．on；to |
| D．／；in |
He spends two hours ________ the movie Painted Skin II(《画皮2》)．
| A．watch |
| B．on watch |
| C．on watching |
| D．in watching |