—I don't know.

—I agree with you.

    Humans have learnt many things from nature. These things have helped us in our daily life. The latest thing is self-repairing clothing.

    Scientists have developed a special way for clothing to repair rips and tears by itself, without the need for sewing. It works with materials such as cotton, linen and wool. The scientists are from the Naval Research Office and Pennsylvania State University in the USA. Scientists Dr Walter Dressick and Dr Melik Demirel looked at how a squid can cling on to things so well. The research team found a protein in the rings of teeth that cover the suckers on a squid. The protein is similar to the one found in the silk that spiders use to make spider webs. It is very strong and elastic.

    The new protein has been developed as part of a coating, which is put on clothes. When the coating is dipped in water, the area around the rip or tear joins together in less than a minute. This could help clothes last longer and save money for us. It could also be useful for military and survival clothes. People like soldiers and mountaineers would be safer if they had clothes that could be repaired quickly and easily. Professor Demirel spoke about the invention. He said," The coatings are thin, less than a micron, so they wouldn't be noticed in everyday wear." Then he added, "Even thin, they increase the overall strength of the material. For the first time, we are making self-healing textiles."

—             . They're boring.

    School was over. Usually David's mother would take him home from school but today she was not here. David decided to go home alone foot, and it took him about half(a)hour.

    When he got home, he couldn't get inhe did not bring his keys. He knocked on the door, but no one answered. David thought his mother (be)in the toilet, so he waited patiently for her. After a few (minute), David knocked again, but still no one answered." What is happening？Is there anything wrong with my mother？"he thought to (he)and got worried. Just at that moment, he heard the s(friend)voice of his neighbour, John. David told him that no one was home, and John asked him (stay)in his house. Two hours later, when David's mother got back, he (play)games with John.happy he was to see his mother！

1）写作要点提示：

⑴你是否喜欢做家务、你常做哪些家务；

⑵重点讲述一次你做家务或学做家务的经历或故事(包括起因、过程、结果等)；

⑶你父母对你所做家务的评价或你个人的收获、感受。

2）写作要求：90词左右, 开头及结尾已给出, 不计人总词数。

Do housework at home

    Do you like doing housework?

    My mother was surprised and happy. She praised me and I was happy, too.