Were are you doing?-I am going home.这句话哪里错了?

------you ------your homework now?do/ doing,are/doing ,were/ doing,does /do 选b为什么? what were you doing? what were you doing this morning还是what are you doing this morning what_when you mother called you up?a.are you doing b.did you do c.you were doing d.were you doing Can you tell me what________at this time yesterday?A.are you dong B.you are doing C.were you dong D.you were doing. could you tell me什么 last night?a.what youcould you tell me什么 last night?a.what you were doing b.what were you doing c.what you are doing d.what are you doing what you when your mother came back?A.are;doing B.were;doing C.did;do D.was;doing Can you tell me___when I called you?A.what were you doingB.what are you doingC.what were you doingD.what you are doing ( )-Were are you doing?-I am going home.____（ ）-Were are you doing?-I am going home.____A B C what are you doing? What are you doing? what are you doing What are you doing? WHAT ARE YOU DOING? you are doing How are you doing? what are you doing? How are you doing?