----- Nội dung dịch tự động từ ảnh ----- 20. I haven't seen my parents for a long time. I didn't..... 21. How long has he worked in the garden ? When... 22. When did you begin to listen to music? How long.. 23. They started to give up smoking two years ago. They have. 24. It is very useful for our health to go jogging. → Jogging.....