请问是keys to exercise 1还是key to exercise 1

请问是keys to exercise 1还是key to exercise 1 英语翻译THE KEYS TO ZHE EXERCISE（翻译成汉语）第一个翻译是用TO还是 OF? 英语翻译:教室的门 我的一个兄弟 TOM的一个朋友THE KEYS TO ZHE EXERCISE（翻译成汉语）第一个翻译是用TO还是 OF？ ____healthy,you should take more exercise.请问是to keep healthy 还是keeping healthy Though you have taken lots of ______,you have to do the ____on page 35.(exercise)正确答案给的是 exercise,exercises.请问为什么第一个不能是复数,exercise做练习讲不是可数名词吗? Keys To The Kingdom 歌词 keys to the vip是什么 You should exercise to stay healthy 中宾语是哪个? go to exercise是什么意思 so...that与too...to结构句型一问The exercise is too difficult for anyone of us to do.The exercise is so difficult that few of us can do it.请问上面两句有何区别?它们是同一选择题的两个选项：The exercise is( )difficult( ).A 请问I'll go get the keys what are these keys ( for 还是to last chance to lose your keys 歌词 the keys to 后接动名词吗 it's best to keep healthy t____ exercise.请问空内应填什么? Now we've finished Exercise One.Let's go on __ Exercise TwoA with B do C to D to doing请问不应该是go on to do Exercise 为什么省略do了呢? 是take exercise 还是take the exercise? exercise-book是什么意思exercise-book是英文