1. The world of work is changing, ___ we need to change.A. but B. however C. so2. Experts suggest ________.A. making personal improvement B. doing more experiment C. learning new words3. If you want to make a success, you need to practise for___ .A. at least 10000 hours B. five years C. six hours a day4. If you build up a social networks, ___ .A. you help other people B. you help others and they help too C. you can’t get any help5. J. K. Rowling didn’t listen to ___ from 12 publishers who refused her books .A. the suggestionB. the criticismC. the negative comments