C2
1) Tooth - teeth
2) lady - ladies
3) table - tables
4) city - cities
5) day - days
6) fox - foxes
7) child - children
8) woman - women
9) street - streets
10) book - books
1) Big - bigger - the biggest
2) Interesting - more interesting - the most interesting
3) Bad - worse - the worst
4) Nice - nicer - the nicest
5) Large - larger - the largest