Choose the best option to fill in each blank

Choose the best option to fill in each blank:
1.fossil fuel....... by renewable energy sorces, ........ ?
A.will be replaced- will they
B.will be repkaced-won't they
C.will replsce-won't they
D, will be replacing- will they
2.My parents' jobs are different from........ .
A. their B.their jobs C. Theirs D.Both B & C are correct
3.Urban areas often get........ pollution than rural areas because they are often....... overcrowded
A. more-more
B.less-few
C.fewer-less
D.None are correct'
4.At 8a.m tomorrow morning, we....... a talk show with Mr.John about saving energy
A.will have B.will be had C.will be having D.None are correct
5.Do you belive that driverless cars ....... popular in the next decade?
A.will be B.will C.being D.none are correct