Question

--I________ you ________ in New York. How long have you been in America?

--Oh, a week.

[　　]

A, don't know; were

B. haven't known; are

C. hadn't known; were

D. didn't know; were

Answer 1

答案：D
提示：

根据第一个会话者的提问“How long have you been in America?”可以断定，该会话者已经知道对方住在美国纽约，那么“他不知道”的情形自然是在“过去”，故答案选D.