5.1 Word Families

Choose the correct answers.
1 Kilimanjaro is 5,895 metres          [heighten, high, height], which makes it the tallest mountain in Africa.
2 What's the        [widen, wide, width] of this river? Do you think we can swim across it?
3 Travelling abroad definitely helps you to          [broaden, broad, breadth] your understanding of other countries and cultures.
4 If we don't            [strengthen, strong, strength] the support for our tent, I think it will fall down during the night.
5 Is it possible to          [lengthen, long, length] our stay in Scotland? We haven't seen the Highlands yet.
6 How        [deepen, deep, depth] is the Grand Canyon? Does anyone here know?

Complete each pair of sentences with the unused words from the previous Exercise. Change the verb forms if necessary.

1 a What's the        of this hill? Can we climb to the top?
b If we can          the middle of the tent, I'll be able to stand up.
2 a The total         of this desert is impressive. It must take weeks to cross it.
b This lake is very       , so please don't take the boats too far out.
3 a How      do you think the gap is? Can I jump it safely?
b Oh, look. They've         the cycle paths in this park. Now we can ride side-by-side.
4 a Mum, how      will it take to get back to the car? I'm tired of walking now.
b Nobody knows the exact        of the Amazon River but some experts believe it's even 6,990 kilometres.
5 a I think they've          this swimming pool. My feet don't touch the bottom.
b Hranicka Propast in the Czech Republic is probably the deepest underwater cave in the world with a       of 473 metres.

Choose the correct answers.
1 I love just lying on my back and floating on the        [rough, calm, heavy] sea close to my beach home.
2 Many species of animal will die       [out, up, down] if we don't start protecting them soon.
3 I won't go into that pool. The water's too       [broad, deep, wide] and you know I can't swim well.
4 The highest point of a mountain is known as the mountain        [ridge, range, peak].