A magazine survey of 13 years old shows what American teenagers like to do in their free time. Here are five most (13)…….…activities. Many teenagers like (14)….......... in fast food restaurants. Some like to attend youth organizations (15)………..…scouts and guides. Others learn (16)………….a musical instrument such as the guitar. Some like to go shopping. And watching television is the fifth popular activity. 13. A. popular B. common C. convenient D. A&B 14. A. eat B. to eat C. eating D. B&C 15. A. such as B. such like C. such D. A&C 16. A. play B. to play C. playing D. to playing