5. Super cars will run ________________________________________________ water in the future.
A. to B. at C. on D. for
6. This is the first time that I ________________________________________________ a 3D film.
A. watch B. watched C. have watched D. have never watched
7. Children can participate in a TV ___________________________________________ for a game show or a quiz show.
A. channel B. competition C. studio D. cartoon
8. Football is _________________________________________ popular sport in the world. Everybody loves it.
A. more B. most C. the more D. the most
9. If we all use ____________________________________________ bags, we will help environment.
A. new B. cheap C. reusable D. reduced