17, They are reading a comic which has one hundred pages.
They are reading a comic with one hundred pages.

18, She is watching a film which lasts three hours.
She is watching a film that lasts three hours.

19, The students are sitting on a bench which has five seats.
The students are sitting on a bench with five seats.

20, They are running a race which is five hundred meters long.
They are running a race that is five hundred meters long.

29, There are fewer theaters in a small city than there are in a big one.
There aren't as many theaters in a small city as there are in a big one.

30, There is less noise in the country than there is in the city.
There isn't as much noise in the country as there is in the city.

32, Do you have a cheaper computer than this?
Is this computer cheaper than this?