-Do you know______he is?-He is a famous engineer.A.whom B.what C.when D.how答案是什么以及合理的理由?

-Do you know______he is?-He is a famous engineer.A.whom B.what C.when D.how答案是什么以及合理的理由? may I know______he told you?Athat Bif Cwhat Dwhich i’ll let you know______he comes backAbefore Bbecause Cas soon as Dalthough Do you know why the train_____ _____?请问是填was late 还是 is late?3Q1.Do you know why the train_____ _____?请问是填was late 还是 is late?2.I didn't know______he was waiting for.是填 who that whom 3.He asked_____________________________ do you do you Do you Do you do you do you Do you you do do you you do do you what do you do? “what do you do! What do you do?