the teather wonders whose key it is.如果这个句子是正确的话,那么key it is也

the teather wonders _____ A.whose key is it B.whose key it i It is a key a key提问 the people whose role it is to help others 这个句子是正确的吗? Knowledge is atresure,but practice is the key to it . Is it the key to the door of for classroom this is the key __the door,don't lost it here is the key you are looking for it Is it your key?改为复数 Whose is the key?改为同义句 ()()the key ()()?怎么改? Is the key yellow? It is not my book.（缩写句子） Is that a key?（做肯定回答） Look This is a pen and it's red .The ruler is yellow.The key