come ; warn ; say ; eat ; change ; swimspeak ; seen ; feed ; attack ; be ; attractSharks (1)_______ around for a very long time.It (2)_______ they have been on earth for thousands of years,and (3)__________ very little.A shark is a fish,but is has ma

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come ; warn ; say ; eat ; change ; swimspeak ; seen ; feed ; attack ; be ; attractSharks (1)_______ around for a very long time.It (2)_______ they have been on earth for thousands of years,and (3)__________ very little.A shark is a fish,but is has ma
come ; warn ; say ; eat ; change ; swim
speak ; seen ; feed ; attack ; be ; attract
Sharks (1)_______ around for a very long time.It (2)_______ they have been on earth for thousands of years,and (3)__________ very little.A shark is a fish,but is has many differences from a fish.For one thing,if a shark stops (4)_________,it will sink.
Not all sharks are alike.There are between 200 and 250 kinds of sharks.They (5)_______ in different sizes.The largest can be as long as 15 metres.It eats plants from the sea,but many sharks (6) ______ on fish,other sea animals,smaller sharks and sometimes they eat people.It(7)_______ that one of the most dangerous sharks is the Great White Shark.They (8)_________ a number of people off the beaches of America.Australia,New Zealand and South Africa also have shark attacks.In some places there are watchtowers on the beaches (9)________ people about sharks in the water.When a shark appears,a bell rings to tell the people to get out of the water.Sharks attack about 100 people a year in the world.Perhaps the shark just thinks that the person is a kind of sea animal,or something good (10)_________.

come ; warn ; say ; eat ; change ; swimspeak ; seen ; feed ; attack ; be ; attractSharks (1)_______ around for a very long time.It (2)_______ they have been on earth for thousands of years,and (3)__________ very little.A shark is a fish,but is has ma
1.have been 2.seems 3.have changed 4.swimming 5.come 6.feed 7.is said 8.have attacked 9.to warn 10.to eat

1.are
2.is said
3.changed
4.swimming
5.come
6.feed
7.seen
8.attack
9.warning
10.to eat