1. Mum gave a skirt to Helen at her b party.
2. Su Hai's mother is a w. She makes sweets.
3. —Let's go to the snack bar by c.
—All right.
4. Grandpa is reading a newspaper and drinking some t.
5. The c wants to make something good.

1. birthday
2. worker
3. car
4. tea
5. cook

This is the Earth. The green part is land(陆地). The part is the sea. The part is clouds. Our Earth is very beautiful.
Many years ago, the Earth was very . But nowadays there is much pollution. There is air pollution, land pollution and pollution now.
People are down too many forests. Many wild(野生的) animals lose their . People are killing animals for food and their skins. It's very cruel(残忍的). People are polluting the land, the water and the . People must stop doing this. We must the Earth.

blue, white, clean, water, cutting, homes, air, save