The weather in Beijing is colder than .
| A．in Shanghai | B．Shanghai |
| C．that in Shanghai | D．of Shanghai |
—Excuse me，could you tell me________a book about science？
—Sure．They are on the second floor．
| A．where I can buy |
| B．where can I buy |
| C．when can I buy |
| D．when I can buy |
A________day！Don’t you want to go out for a walk with us？
| A．beautiful |
| B．scary |
| C．disappointing |
| D．crucial |
I hear it’s a________experience to visit the caves and many people go there every day．
| A．terrifying |
| B．fascinating |
| C．boring |
| D．frustrating |
The hamburger not only smells good but also tastes________．
| A．awful |
| B．bad |
| C．delicious |
| D．salty |
Don’t open the door to strangers；it’s not________．
| A．safe |
| B．polite |
| C．convincing |
| D．embarrassing |