Mr. Jiang is a businessman. He is always too busy to have any time to relax, “I have to buy ________ a robot so that I can have more free time.” Mr. Jiang thought. So he ordered one from a ________ shop.

________ robot made Mr. Jiang’s life much easier. It made a big breakfast when he got up. When Mr. Jiang was at work, the robot ________ all the housework. It also went shopping. When Mr. Jiang got back home from work, his house looked as ________ as a new one, and a delicious dinner was ready ________ him. After dinner, the robot tidied the room, so Mr. Jiang could enjoy watching TV or doing some reading. ________ seemed that the robot almost met Mr. Jiang’s needs.

After a few comfortable weeks, however, things started to go wrong. The robot caught a virus (病毒) and began to make ________ mistakes. Sometimes it woke Mr. Jiang up at four o’clock in the morning. ________ Mr. Jiang got home, he found his clothes and shoes were everywhere. And the robot moved so fast that it broke some things. Mr. Jiang felt angry!

In the end, he decided ________ it back to the robot shop. Robots can help people a lot, but they can also be too much trouble   (麻烦) .

We know the Moon is our satellite（卫星）. It ________ round the Earth day and night. It ________ around once a month, every 29 and a half days.

The Moon is our ________ neighbour in space. It is ________ than the Earth. Plants can’t grow on the Moon ________ there is no air on it.

The Moon hasn’t ________ own light. It shines back the light of the Sun. When the Sun is shining on one side of the Moon, it looks like ________ big bright round ball. We can’t see the Moon when the Sun is shining on ________ side.

In fact, the Moon isn’t as near as it looks. It’s difficult for scientists to study on the Moon, but they will never stop ________ on it. I hope one day, we can take a trip to the Moon. It must be fun ________ into space.

In the early 1990s, the word “Internet” was strange to most people. But today, Internet has become a _______ tool for people all over the world. Maybe Internet has been the greatest _______ in the field of communication _______ the history of mankind (人类). Communicating with others on the Internet is much _______. We can chat with a person who is _______ in the other part of the world. We can email our friends and they can read _______ emails within a minute.

Giving all kinds of information is probably the _______ advantage of the Internet. We can use search engines _______ the information we need. Just type in a keyword or keywords and the search engine will give _______ a list of suitable websites to look at.

We can enjoy a lot on the Internet by downloading games, __________ chat rooms or surfing websites. There are some games for free. We can __________ new and interesting people in the chat room. We can __________ listen to music and see films.

Now, there is a lot of service on the Internet such as online banking, job finding __________ ticket buying. We can also do shopping and find __________ all kinds of goods. Sometimes we can find something that is quite good but very __________.