----- Nội dung dịch tự động từ ảnh ----- 13. He didn't become a teacher of English until 2001, It was not 14. It takes me 30 minutes to ride to school. I spend 15. The teacher started to write the lesson plan right after he returned home from the work. Hardly had 16. He is very poor. He can't buy a second hand bike. He is so 17. Students must hand in their assignments before the deadline. It is essential that____________ 18. It rained heavily, so he didn't go to school. Had it not 19. He can draw portrait in 5 minutes. His portrait can 20. It often takes me thirty minutes to walk to school. I often spend