Her son _____ Coke, but now he _____ milk.
| A．used to drink ; is used to drinking | B．used to drinking ; drinks |
| C．is used to drinking; used to drink | D．is used to drink; is drinking |
--- Do you know ______?
--- For a month.
| A．how long will she be away |
| B．how long she will be away |
| C． how often will she go there |
| D．how often she will go there |
______ the dinner was all over, everyone helped wash the dishes.
| A．How | B．When |
| C．Before | D．Why |
Yunnan is beautiful and I’m ______ visiting it again.
| A．keeping clear of | B．suffering from |
| C．looking forward to | D．running away from |
I ______ ride a bike to school. But this morning, I walked to school.
| A．never | B．hardly | C．seldom | D．usually |
Let’s open the windows to have some ______ air here.
| A．cheap | B．nervous |
| C．careful | D．fresh |