-Eric is ill in hospital. He can’t come to your party today. -________
—How many birds can you see in the trees? —I can see _________ birds in them.
—Where is Miss Wang? —She went to Hainan Island last week and will return _______ six days.
There will be _________ pollution this year than last year.
—Will people live to be 300 years old? —_________.
There ______ an art show this Sunday.