what it is?who it is?

what it is?who it is? who can tell me.what. is it? What is it?When is it?How is it?Who is it?这些句What is it?When is it?How is it?Who is it?这些句子成立吗? who is it What is it?|It's . Good ()is it?on the sofa.(what where who how) it is not who is right but what is right is important单句该错 Who can tell me what place it is 还是Who can tell me what place is it? ----Someone is at the door.----_______?A.what is it B.who is it C.who is he D.which one is it What colour is it? what time is it what time is it? it,is,what,time? what colour is it? what is it? what it is what is it what color is it