根据句意及括号内的注释拼写单词。 1. Each of us will have a __________(one's own) computer in the future. 2. I was glad to __________ (to get or to be given sth.)a gift from my grandpa on Children's Day. 3. I was__________ (sleeping) when the UFO landed in front of my house. 4. She arrived in London on a cold morning. Three days__________ (at a time in the future),she found a job in a restaurant. 5. It's not only a chance but also a challenge for China to __________ (to become a member of a group) the WTO.