Example:

Dolphins live in the sea They can swim very quickly

1.

_______ catch a lot of fish. They are much smaller

2.

________ whales or sharks, but more beautiful.

3.

Dolphins________ come to the beach in hot weather

4.

and play________ the children who are swimming

there. They are not afraid of people.

5.

You can often see dolphins________ zoos now

They learn how to play games with balls and toys. Dolphins

6.

________ a lot of people's favourite animal.

Example:

It

They

The

1．

and

but

because

2．

that

than

then

3．

before

after

sometimes

4．

with

of

at

5．

by

in

to

6．

have

is

are