Complete the sentences with the words below. Use the same word in each pair of sentences

Ex4. Complete the sentences with the words below. Use the same word in each pair of
sentences.
exercise        hard              level            light
record           rest                 show           work

1. a. Usain Bolt set a new world ____________________ at the Olympic Games.
b. You can ____________________ a message for someone to listen to later.
2. a. Look at ____________________ 3 on page 78.
b. You need to ____________________ to stay fit.
3. a. This MP3 player doesn't ____________________ broken. It’s broken.
b Does your mum ____________________ at the hospital?
4. a. There's a great quiz ____________________ on TV tonight.
b. Can you ____________________ me the way to the library?
5. a. I'm exhausted. I need a ____________________!
b. How will you spend the ____________________ of the day?
6. a. I couldn't sleep because my bed was too ____________________.
b. If I think ____________________, I'm sure I'll work out the answer.
7. a. It's getting dark. Switch on the ____________________ .
b. This suitcase is quite ____________________ - only 6kg.
8. a. There is a worryingly high ____________________ of CO2 in the atmosphere.
b. The shelf isn't ____________________ so the books might fall off.