1. used to 过去常常2. be afraid of 害怕 3. from time to time 时常，有时【出处：21教育师】4. turn red 变红5. take.up 开始做6. deal with 对付、应付7. not.anymore 不再8. tons of attention 很多关注9. worry about 为.担忧10. be careful 当心11. hang out 闲逛12. give up 放弃13. think about 考虑14. a very small number of. 极少数的15. be alone 独处16. give a speech 做演讲17. in public 当众18. all the time 一直，总是19. on the soccer team 在足球队20
