Choose the correct option to complete each sentence

choose the correct option to complete each sentence
1.Rhonda has...........homework to do than ricky because she did more of it during school
A.more                      B.less                           C.fewer
2.Nearly 1.1 billion.............people are living in extreme poverty than in 1990
A.fewer                         B.less                        C.many
3.Crimer will affect everyone in different ways , ..............?
A.doesn't it                         B. will it                        C.won't it 
4.In the city there are ...............job opportunities than in the countryside
A.more                              B.fewer                           C.less
5.Nobody knows exactly  how many people live in slums,................?
A.don't                           B.do they                             C.does it
6.I think you should go shooping today because you have ....................time than I do
A.less                           B.fewer                            C.more
7.John doesn't drink much coffee.He drinks ...............coffee than his friends do 
A.more                        B.less                            C.fewer
8.Mumbai has a population of around 21 million people,...........
A.hasn't they                  B.has it                           C.doesn't it
9.My mother is so busy, so she has visited me...............times than my father has
A.fewer                          B.less                        C.more
10.That's a memorable experience,............
A. is that                     B.isn't it                            C.isn't that