Milk quickly goes bad in summer it is in a fridge (冰箱).
---Where does John live?---He lives on ______ floor but he doesn’t use a lift to go up and down.
—What bad weather!—Yes. If it _______raining, the fields will be covered with water soon.
-I wonder ____________. -Zebras.
-Why didn’t you go to the cinema with us this afternoon, Jim?-Because I ______ at the station for my uncle from Beijing at that time.
- I need something for cutting the paper.- Oh, you want a knife? OK, I'll get ______ for you.