Is it the key to the door of for classroom

Is it the key to the door of for classroom Knowledge is atresure,but practice is the key to it . LOVE IS THE KEY TO THE WORLD Here is the key to the the key to the what is the key to happiness? is there a key to the door 翻译Practice is the key to success. The key to success is preparation Details is the key to success the key to the door是否可以还原为the key which is to the door Knowledge is a treasure ,but practice is the key to it 翻译成中文,是什么 英语填空题 knowledge is ______,but practice is the key英语填空题knowledge is ______,but practice is the key to it The c____ is the key to the 21st century. 英语句子moral is the key to nationmoral is the key to nation这句话对吗 Is the key yellow? where is the key 求it is like having in your hands the key to the accumulated memories of the ages 的中文翻译