1.A laptop : 

Computer is one of the most important invention in history. It has much influence on our life. Firstly, computer improves quality of communication. Before computer was invented, the communication is so difficult that talking with others too far away. Now, computers bring people closer together. For example, people can communicate with others in the world by using e-mail. It saves their time compared with letter. It’s very convenient for people who’d like to send letters to other country. Secondly, having computers in the work place help the business to run more efficiently. Using computer cut down their work times. They don’t have to write everything out by hand or type it out on typewriters. If they don’t work by computer, they may make a lot of mistake. Also , It’s easier to find the information that you need to find. When computers weren’t invented, people had to go to libraries and search through books and find out information. Now, you can find information in the internet. Then, computer is used in schools. Teachers use it for teaching. The lessons are more interesting so students remember the lesson easily. If the computer weren’t invented, people would work inefficiently so economics wouldn’t increase . They must spend a lot of time for communication. Therefore, computers are necessary in our life.

2.

Voluntary work has some interesting benefits which attract many people nowadays. Firstly, being a volunteer is a meaningful thing to mention. Doing voluntary work means doing work without asking for money or wave. In this way, people can contribute their enthusiasm and energy to the society, which also results in spending free time more usefully. Besides, when doing voluntary tasks, volunteers can receive some significant skills. They may learn how to socialize with others, or learn how to cooperate in a diverse team, or with deal with problem in a logic way. Last but not least, voluntary work connects different people. It provides a chance for volunteers to meet up and establish new relationships. To sum up, volunteers can not only give but also receive many useful experiences from voluntary activities.