I use a tram for commuting every day.

Chlorofluoromethane is one of the substances that contribute to the destruction of the ozone layer.

This halter neck dress is very elegant, isn't it?

Penelope is an important figure in Greek mythology.

Political correctness is an important theme in modern society.

He repudiated the proposal.

This problem is difficult.

He wrote the original plan for this movie.

He enjoys netsurfing every day.

He was reading a book about the Cyclops in Greek mythology.