----- Nội dung dịch tự động từ ảnh ----- Ex. 2 Find and correct the mistakes. 1. There is still evidence for people to believe in the exist of UFOS. A в D 2. We are confident that we will be ability to persuade our friends to keep the school clean. A B D 3. We have to save energy because save energy is very nekessary. A B D 4. It is raining heavily because I can't go out. в с 5. This book was writing by Jack London, an American writer. A D A B C D