English Many Much More Little Few Less McCloskey

D Choose the correct form of each word in parenthesis.Underneath the sentence identify MCCLOSKEY whether the noun refers to quantities or numbers.  Some of the sentences have additional grammatical errors. Please fix them in order to ensure the sentence is correct.

1. It is necessary to apply (much, many) concentration in (Little, Few, Less) time.
2. (Many, Much, More) were tired before the hill course, and few were as fresh as when they started.
3. Some had to put in as (Many, Much, More) hours of training as the leader.
4.  (Little, Few, Less) people made it to the top.
5. (Little, Few, Less)  of the sand is causing trouble
6. Each of the first six (is, are) placed almost side by side.
7. The first six (are, is) placed almost side by side
8. There is (Little, Few, Less) time difference between each of them.
9. There is (Little, Few, Less) time difference between every competition.
10. Some had to put in (Many, Much, More) hours of training as the leader
11. There is(Little, Few, Less) time difference among them.
12. The first six competitors (are, is) very close in time.
13. One must consider the two jobs before they make a choice. (fix)
14. One of the sidelights (are, is) hanging off.
15. Each of the students brought their books. (fix)
16. A person has to watch what they do. (fix)
17. Some had to put in as (Many, Much, More) time in training as the leader 

18. (Many, Much, More) are called, but few is chosen.
19. (Little, Few, Less) people prefer dogs to cats.

20.  It takes (Little, Few, Less) stamina to walk than it does to run.