There is going to _______ a basketballmatch on the playground this afternoon.

Would you like . — No, thanks. I’m full.

What _____heavy rain it was！—Yes, but I love______ air after it rains. It smells so fresh.

Now the air in our town is __ than before. Yes. Something must be done to stop the pollution.

It was half a year________my good friend returned to his hometown