----- Nội dung ảnh ----- 1. Each sentence has 1 mistake. Circle it and correct it. 1. Graham Bell was a teacher who was a school for the deaf in Massachusetts. 2. Telephot, a process for sending pictures by wire, has been invented during the 1920s. 3. The first transcontinental telephoto was sent in 1925. 4. The immune system is the body’s way of protecting itself against viruses. 5. What I told her a few days ago were not the solutions to most of her problems. 6. However cheap it is, the poor quality products cannot always appeal to customers. 7. If you do not keep my secret, I would surely reveal yours. 8. Jim’s grandfather left him 50,000 dollars, this was too big a sum to him. 9. So far Linda has been writing 5 novels on the problems teenagers have to cope with in the new world.
9. The choice of which restaurant to go to for tonight's meal is entirely yours. 10. You mustn't have seen my sister, for I have not sister living in this city.