（题文）Look! There are some birds _______ in the sky. They are very beautiful.
A. to fly B. fly C. flying D. flown
It's reported that people throw _____ plastic bags along this street every day.
A. hundred B. hundreds C. hundred of D. hundreds of
—______can you finish your homework?
—In about one and a half hours.
A. How fast B. How soon C. How often
There ________ a football match and a concert this weekend.
A. is B. are C. will be
More and more people can ________ over 100 years old in the future.
A. live for B. live in C. live to be D. live be
There will be _______ jobs for people because some robots will do the same jobs as people.
A. many B. more C. fewer D. fewest
