They have already finished their homework.   (改为否定句)

They finished their homework .

Where (be) you last night?

Richard learned to make more money from the man. From then on, he was not poor any more.

阅读理解

    In 1969, humans landed on the moon for the first time. Now, many other countries want to go there as well. Why?

    The moon has a lot of minerals (矿物质) and other useful things. We want to find out if we can use them. The moon is our closest neighbor in space. We can use it as a rest station. Then, we can learn more about other planets far away in space.

    The moon is 3,474 kilometers in diameter (直径). It is about one-fourth the size of Earth. If Earth is the size of a basketball, the moon is the size of a tennis ball.

    The moon has much less gravity than Earth. If you can jump 1.5 meters on Earth, you can jump 9 meters on the moon.

    The moon is very quiet. There is no sound there. There are a lot of grey rocks on it. The moon's sky is always black.

    Our moon is about 384,400 kilometers away from Earth. The total length of the Great Wall is about 21,200 kilometers. We would have to put about ____ Great Walls end to end to reach the moon!

— Did you (考虑过如何避免伤到自己) in P.E. class?

— Yes. We discussed it in our class meeting.

并不是所有的蚂蚁都出去寻找食物。

ants go out for food.

The Great Wall is one of            places of interest in the world.

Jack is__________________ eight- year-old boy and he goes to school on __________________ foot every day.

Tina wants to some friends to her birthday party this Sunday afternoon.

Peter was so ________. He finished all the water in the cup quickly.

—Could you please tell me                             ?

—Yes. I bought them online.

We(等待) at the bus stop until the bus came.

阅读下面短文，根据短文内容选择最佳选项。

    Many people have dogs at home as pets. If a dog is happy, then he may want to meet you or play with you. If he doesn't feel happy, then he would rather stay alone. But dogs can't talk. How can you tell how your dog is feeling? By his body language.

    If your dog's head and back are lowered, his ears are down and his eyes are narrowed, and his tail is between his legs, then he is fearful. You may touch him gently to comfort him. If your dog's ears are up, his eyes are bright, and he wags his tail rapidly (快速地), he is very happy. He may also hold his mouth open more or even pant (气喘) mildly. Then you can go and play with him freely. If he closes his mouth and looks serious as you get closer, then he has changed his mind. It is better to leave him alone until he comes to you. Remember, we are talking about dogs that you know. Be sure a parent is around to allow you to get close to the dog. Get away from strange dogs even if they seem friendly.

    The most important clue (线索) is the mouth. If the dog's mouth is closed, then he is most likely to be not relaxed or happy, and he does not want you to touch or play with him right now.

政府必须采取措施改善我们的生存环境。

The government must our living environment.

Patty (buy) a magazine about the school life already.

Cherry has a piano lesson once a week. (改为一般疑问句)

Cherry a piano lesson once a week?

—Mr Hu, can you tell us how to learn maths well?

—Sure. But remember nothing can be learned _______hard work.

Why did you and Tina (藏) behind some bushes?

— What should I do when the earthquake happens, Dad?

—First of all, it's important to      and hide yourself in the corners of the room.

—Mike gave me the present yesterday.

—But it is too expensive and you shouldn't       it.