The birds are getting smaller and smaller. Many kinds of birds ________ the United States, but the number of the birds is becoming ________ every year. One of the leading reasons is the growing number of pet ________. By keeping your pet cats in your home, you can help give birds a better possible chance to live.

Cats ________ many birds and small animals every year. Of the 90 million pet cats in this country, about two thirds are allowed to go ________. It is said that these cats kill hundreds of millions of birds each year as well as billions of small animals such as rabbits and field mice.

Cats can bring ________. They can also bring illness to the animals that live in people’s yard, and further weaken (变弱) the health of the natural populations.

Going outside is ________ for your cats too. Allowing pet cats to go outside is not just bad for birds and wildlife (野生动物). It is bad for the cats themselves, too. Outdoor cats can get sick very ________. They may be ________ from traffic and attacks (攻击) from other animals. In fact, outdoor cats usually don’t pass the age of five, while indoor cats often live to be 17 or older.

You should let your cat inside. Keep your pet cat inside! If you ________ a young cat, it’s your duty to let it play inside.

How did we help to save our earth this week? Let me tell you.

First, my family tried to save electricity (电). We never left the lights _______ when leaving the room. We _______ the TV when nobody was watching it. Mum only used cold water in the washing machine.

Second, we started recycling (回收) this week. We tried to write on _______ of our paper, not just on one side. We also divided our rubbish into _______ bags for bottles, paper and food. Mum kept the plastic shopping bags from the supermarket to use them again as rubbish bags.

Third, my family started to save _______. We stopped _______ long baths and had short showers (淋浴) _______. We washed toilet with used water. Mum and dad used less water to do the washing. My sister and I didn’t leave the tap (龙头) running when we brushed our teeth.

At last, mum and dad began to save gas (汽油). Mum used to _______ us to school, but now my sister and I started riding our bikes to school. It’s hard work _______ good exercise! This week dad and a few of the people in his company also started to go to work in one car and share the ________.  

These are great ways to help protect our environment.

Most dog owners need to walk their animals every day. _________, some are not walking their dogs in a proper way, leading to many problems. Here is some advice.

Firstly, dog owners should always keep their animals on a leash when walking outside. It can avoid (避免) some terrible _________ such as dogs getting lost or fighting with other dogs. With a leash, dogs won’t jump at passers-by. Dog owners must understand that not everybody likes dogs. Some people _________ dogs.

Secondly, early mornings and late evenings are better times for walking dogs because there are few people walking _________ on the street.

At last, dog owners must _________ their dogs’ messin time. It will be terrible if someone steps in the mess.