用所给单词的适当形式填空. 1. There are many _____ (rule) in our school. 2. You should _____ (wash) your hands before meals. 3. Don't talk _____ (loud) here. 4. Shall we _____ (meet) at the school gate (门口)? 5. This famous singer _____ (write) a book about his life last year.