----- Nội dung dịch tự động từ ảnh ----- Part 4: Each sentence has ONE mistake. Find and correct it. (1,0 m) Ex: My teacher advised me study hard for the next semester, study → to study Question 17. I wish I can go to see all the wonders which have been recognized by UNESCO. Question 18. Tom said that he is learning English in an evening class then. Question 19. If we use fewer paper, we can save trees in the forest. Question 20. Na often finish her homework before she goes to bed.