同义句转换。 1. The teacher helped us to solve the problem last time. ______ the ______ of the teacher, we solved the problem last time. 2. What have you done with that problem? ______ have you ______ with that problem? 3. What about joining the English club to improve your spoken English? ______ ______ join the English club to improve your spoken English? 4. I really want to know how I can study English better. I really want to know ______ _____ study English better. 5. The little girl is too young to look after herself. The little girl isn't _____ _____ to look after herself. 6. He tried his best to improve his listening skills. He tried his best to ______ his listening skills ______. 7. She's afraid to go out at night. She is _____ ______ going out at night. 8. Understanding all the words in the magazine is not easy for me. _____ is not easy for me to _____ all the words in the magazine.