17.
1 - a new one
2 - a better one
3 - an old one
4 - a big one
5 - different ones
6 - green ones
7 - a white one
8 - a fast one
9 - another one
10 - a dark blue one
18.
1 - much
2 - how many
3 - a lot
4 - much
5 - how much; much
6 - a lot
7 - many
8 - many
9 - much