This morning we have __________ classes, and the __________ class is Chinese.

Now the air in Yancheng is _______ than it used to be . We should do something to stop it .

What are you doing, Uncle Wang– I’m sorting out old books and I’ll ________to kids in West China.

Tom along with his parents _____ to Hong Kong on holiday , right—I think so. They must be having fun in Hong Kong now .

Shall we go and have a picnic at the weekend— ______. According to the weather forecast, theremight be a cold front by then．