---- David, look at the man in white over there.Can you tell me _______ ? ----He is a doctor.
—How many birds can you see in the trees? —I can see _________ birds in them.
A dog robot could help ____ the room.
—Where is Miss Wang? —She went to Hainan Island last week and will return _________ six days.
There will be ____ cars and ____ pollution twenty years later.
—What is a resolution?—It’s