how do you know when it opens and ______(close)

how do you know when it opens and ______(close) how do you know How do you know? Do you know how moved I was when you said I love you? How do I know you? Do you know when (meet) when you know how to die ,you know how to how do you know when you have the flu是什么复合句 翻译并解释一下吧； how do you know what you should do when you look at the screen How do you know when computers begin?如题.要英文.写错了，是Do you know when computers begin?要英文的文章！ What would you say when you meet a friend?1.Nice to know you,2.How are you?3.How do you do Do you know ________(how/what) to do with the rubbish when you are on the way?选什么 Do you know -------- when there is a fire?Do you know -------- when there is a fire?A.how to do B.what to doC.what do D.how do Do you know to do it in the lab tomorrow?a:what b:how c:when d:where 为什么? do you know how much i love how much do you know really about do you know how to write How many color do you know?