5 Complete the sentences. Add the prefixes or suffixes in exercise 4 to the words in the box.
There is one word that you do not need.
use
power nation sleep predict
expected
1 Thanks for the advice. I think it'll be
very
2 I'm very tired. I had a night.
3 I know what he will do. He's usually
quite
4 His victory was completely
5 We carried out a survey of teenagers'
favourite sports
1 Thanks for the advice . I think it'll be very - ( useful ) 2 I'm very tired . I had a - ( sleepless ) night . 3 1 know what he will do . He's usually quite ( unpredictable ) 4 His victory was completely ( unexpected ) 5 We carried out a ( nationwide ) - survey of teenagers favourite sports .