Giải thích giúp mình với!!! CỤM TỪ CỐ ĐỊNH 1. Law should be ....... to protect rare species from being illegally hunted A. conducted B. enacted C. understood D. competed 2. The government should implement more practical solutions to .... the problem of land degradation A. obtain B. advance C. refuse D. tackle 3. I didn't .... the joke while everyone laughed heartily A. get B. play C. sing D. load 4. Tuan never ..... the chance to give his own opinion A. turns B. drives C. striles D. misses 5. She decided to .... on a diet to participate in the beauty contest A. take B. go C. pay D. set 6. Only by having a balanced diet and doing daily exercise can you..... weight A. miss B. stick C. lose D. move 7. He ..... a new world record record, with just 9.45 seconds for the 100 metres A. asked B. set C. gained D. picked 8. He.... the opportunity and successfully applied for a scholarship A. painted B. turned C. brought D. seized 9. I try to .... in touch with my university friends via email and Facebook A. set B. keep C. gain D. share 10. People share the belief that ..... video games can have a negative effect on children A. doing B. going C. playing D. taking 11. Martin .... a cold because he forgot to close the door last night A. caught B. grasped C. seized D. ate