He looks upset. Let’s try to _____.
How much did the new watch your sister?—She 350 yuan for it.
Now the air in our city is ________ than it used to be.Something must be done to stop it.
Just a minute! My brother________ his car in the garden.
There will be a football match tomorrow. Would you like to go with me? ––If I have time, I _______ with you.