Information About the Big Cities

Things to do

To visit interesting places, to go to {#blank#}1{#/blank#}, to see movies and to{#blank#}2{#/blank#} things from all over the world.

Reasons for moving to big cities

The chances to find{#blank#}3{#/blank#}, study in a good school and receive good{#blank#}4{#/blank#} care.

Problems

It's hard to keep the cities {#blank#}5{#/blank#} and clean.

Information about whales

How are they different from fish?

They {#blank#}1{#/blank#} air.

They move their tails {#blank#}2{#/blank#} and down to swim.

What do whale songs sound like?

Whale songs sound like strange {#blank#}3{#/blank#}

Why do they sing?

Some whales sing to find food.

{#blank#}4{#/blank#} sing as a way to talk to their friends

The {#blank#}5{#/blank#} of whales sing to find other whales ,especially their own children.