43. future houses will have hi-tech rooms for ............... all of the family members.
a. read b. to read c. reading d. to reading
44. our houses will use the sun or the wind electricity.
a. to have b. to do c. to make d. to give
45. in the future, cars might use energy from.
a. gas b. water c. oil d. power
46. our dream house will be located in the sea.
a. on b. at c. in d. between
47. don't old things because perhaps you will need them later.
a. throw b. throw away c. throwing d. throwing away
48. causes many breathing problems.
a. fresh air b. fresher air is. polluted air d. polluted air
49. we won't use cd players because we will have smartwatches that _____ music.
a. play b. plays c. hear d. listen to
50. if you eat fast food...., you will be fatter easily.
a. very b. very much c. too much d. most