----- Nội dung ảnh ----- A lesson in school is a planned period of time for (1) __________. A lesson may be either one section of a textbook or a short period of time during which learners are taught how to perform an activity. Lessons are generally taught in a (3) __________ learning environment. Also, a lesson means a learner learning something he did not (4) __________ before. Such a lesson can be either planned or (5) __________. The slang phrase “to teach someone a lesson,” means to punish or scold a person for (6) __________.
