the key to do和the key to doing的意思和区别demand to do和demand to doing的意思

the key to doing还是do? the key to the the key to do和the key to doing的意思和区别demand to do和demand to doing的意思 Does jill take the key to the front door和Can I have the key to the front do为什么前面用take 后面又用have? the key to do sth .the key to doing.哪个结构是正确的? the key to your the key to 后面接ing 还是do是the key to do sth.还是the key to doing sth.这里的 to the answer tosomething 和 the key to the door Do you have a key, that is the key to unlock my heart.是什么意思? Do you know the key to the question?这句话里key后面为什么用to而不用of? Do you have the key ( ) the office The Key To My Heart the answer/key to翻译 Do you know the key to the problem?为什么用to不用for what do you think is the key to the trend?这句话怎么翻译? WHAT DO YOU THINK IS THE KEY TO THE MARRIAGE?THANK!PLEASE ANSWER IN EN. DO YOU HAPPEN TO SEE the key on the sit 句子成份 Why do I still miss you so much..Where is the key to the heart..