They __________ each other for more than 5 years.
| A．know | B．knew |
| C．will know | D．have known |
Suddenly,all the lights in her house went .
| A．of | B．off | C．up | D．down |
Look!The boy is sitting a tree.
| A．on | B．in | C．of | D．above |
Do you know the boy?He is three years than me.
| A．young;younger | B．young;young | C．younger;younger | D．younger;young |
—has your friend been to the Great Wall?—Twice.
| A．How often | B．What time | C．How long | D．How many times |
Do you know the girl?
| A．5-years-old | B．5-year-old | C．5 years old | D．5-year-older |