I think the key to dealing with this problem is ____what caused it.横线上用find out填写,怎么填?请说出理由··语法上的

I think the key to success is not so much money as a strong will. Do you have the key to _____blue car?I think ________ key is on the desk.分别填什么冠词?或不填? I am the key to my success! the key to the I remember------the key----the room to you this morning. My sister and I will go to a movie this Sunday.A.So I doB.So do I C.So will I D.So I will-Where do you think you lost your key?-It might_____to the playground ,but I 'm not sureA miss B leave C sit D forget the key to your I think the real key is find the love u have for yourself什么意思 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. 1.What did you do with your car?--I lost my key .so I had to 〔 〕in a park.A.leave B.take C.pull D.push2.What do you think ie the second ( )invention of all the inventions?A.useful B.more useful C.much useful D.most useful3.Five hundred dollars ( ___must come first and carefulness is the ___safe driving.A,safe; key of B,being safe,key ofC,safe,key to D,driving safely,key to there is no doubt ,i think ,______he will be admitted to a key univesity 填冠词：Do you have _ key to the blue car?1Do you have _ key to the blue car?-I think _ key is on the desk.2_ youngest leader in China is _ man called Lu Hao.3 People in westen countries celebrates _ Christmas,while people in China observe _ Spri 1,-Was the key still there___you went to pick up your child?-Perhaps.But when I got back,it was missing.A,while B,although C,once D,unless2,Although others may not agree,personally,I don't think his plan is practical,___easy to carry out.A,so is it B 以What do you think is the key to happiness?写篇100字左右的作文 I can't open the door with this key.Why not( )it with another key?A.to try opening B.to try to open C.try to open D.try opening I can't find the key to my office,I( )have lost it on my way homeA would B should C must D ought to