I don't know ________.

A. where does he come from

B. how old he is

C. what is his name

D. when will he leave

I don't know           ．

A．where does he come from                        B．what is his name

C．how old he is                                             D．when will he leave

I don't know the man over there．Could you tell me _____?

A．what his name is                                   B．where does he come from

C．how old is he                                        D．when did he come here