There is a police car _____ the bus. The police are watching the traffic.
---Which would you like to drink , coffee or orange juice ? ---___. Please give me a cup of tea.
_____ he was tired , ____ he didn’t stop working .
The air in Lanzhou is getting much _____ now than a few years ago .
---_____ is it from your home to the cinema ? ---It’s about twenty minutes’ walk .
There are few _____ in the fridge. Let's go and buy some potatoes, carrots and peppers.