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Đỗ Minh Quang

From the list of words given, choose the most suitable word for each blank to complete the
passage below.
and before has of which another even have
to while as except in up with
Manatees are general mammals that live their entire lives in the water. The bodies are well suited
(1) ………………their environment. They have large, paddle-shaped tails (2) …………………front
flippers with toenails. Their skin is smooth (3) …………………scattered bristly hairs. Manatees also
have a thick layer (4) …………………fat to keep warm in cool water.
Manatees (5) …………………lungs and need to breathe air. Their nostrils are developed to lose tightly
(6) …………………underwater. They usually come (7) …………………for air every four minutes.
When sleeping, they can wait ten minutes (8) …………………coming up for a breath. Manatees are
never aggressive. They will not (9) …………………fight to protect their young. They have no enemies
(10) …………………humans. They are endangered by people who encroach on their habitat.


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