I think it will be difficult ___ a robot ____ the same things as a person.
A. as, to do B. for, to do C. for ,doing D. as, doing
He is very happy , because he _____ in a big apartment next year.
A. live B. lives C. will live D. will living
—How many birds can you see in the trees?
—I can see _________ birds in them.
A. hundreds of B. five hundreds
C. hundred of D. five hundreds of
A dog robot could help ____ the room.
A. cleaning B. getting C. clean D. get
—Where is Miss Wang?
—She went to Hainan Island last week and will return _________ six days.
A. ago B. later C. behind D. in
There will be ____ cars and ____ pollution twenty years later.
A. many, few B. little, few
C. less, more D. fewer, less
