1.You may not know how computer works, but you are certain to know that computer is a necessary part of our daily life.
2.To us, computer is not only a toll for calculating--it can help people do many things, such as searching for information, chatting with friends online and shopping, etc.
3.Since that character of the cartoon has been brought to the Asian market, more and more young people become his fans.
4.She thinks that helping the aged is his responsibility.（是不是打错了 应该是她her吧?）
5.In recent months, crimes are on the increase, so we need to increase the police to protect people.
6.The death of the son made the old woman numb.
7.He can still be optimistic in the midst of all these troubles.
8.They still try to insist on carrying on the experiment though they have trouble.
9.We must weed out the unqualified applicants.
10.The doctor asked him to cut down on cigarettes.