Question

b. Fill in the right form 4 pts
of the verbs in brackets:
1. Whales ... (not extract) oxygen from water:
they come to the surface of the water and
(breathe) air.
2. Whales can ... (hold) their breath between 5
minutes and one hour under the surface of
the sea.
3. Whales ... (not sleep) completely, they only
rest, half asleep, close to the water surface.
4. When resting, whales ... (use) half of the
energy they use when they are active.
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Answer 1

Hi there!

1. Whales don`t extract oxygen from water:they come to the surface of the water and breathe air.

2. Whales can hold their breath between 5 minutes and one hour under the surface of the sea.

3. Whales don`t sleep completely, they onlyrest, half asleep, close to the water surface.

4. When resting, whales use half of the energy they use when they are active.

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