Complete the sentences with the words in the box. There are two extra words.

a holiday job carpenter discovery field trip flexible hours invention retire wood-burner

0 A carpenter is someone who works with wood.

1 People in my company work            , so they can choose when they start work each day.

2 My Geography class went on a            to a lake yesterday.

3 My grandfather plans to            in a few years’ time.

4 I think mobile phones are the most useful            ever!

5 We keep warm by using old trees on our            at home.