We're having a great time here in Cambodia.

19.If the air isn’t fresh, people………....

A. to cough             B. cough            C. will cough

Where have you been (be/you)?

good - better
polluted - more polluted
intelligent - more intelligent
high - higher
short - shorter
attractive - more attractive
nice - nicer
quiet - quieter

We have never seen such a bad movie. (time)
- This is the worst time we have ever seen such a bad movie.