Comparatives BE3 revision

Are people who live in cities .... than people who live in the country? (happy)

Is your new teacher ... than the teacher you had last year? (strict)

These new computer games are ... than the ones in the library. (interesting)

The exam I took yesterday was ... than any others I have taken. (difficult)

I think that most vampire films are than zombie films. (exciting)

The streets are ... than before because of the increased pollution levels. (dirty)

Going to school by bike is ... than taking the bus. (healthy)