1 Complete the words in the sentences.
0 Your e l b o w is in the middle of your arm.
1 Your k_ _ _ is in the middle of your leg.
2 Don’t surf the internet just before bedtime
because you won’t feel s_ _ _ _ _.
3 Last night I had a really bad stomach a _ _ _.
4 Your b _ _ _ _ is mainly made of water, so
drinking plenty of water helps you to think.
5 I usually sleep b _ _ _ _ the night before an
exam because I’m so nervous!
6 Most people’s h _ _ _ _ _ beat about 72 times
each minute.
7 I usually get r for bed at about 9.30, but
read in bed for half an hour after that.
8 In spring and summer, a lot of people suffer from
h .
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