单选题
-- Did Alan enjoy seeing his old friends yesterday?
-- Yes, he did. He ______ his old friends for a long time.
A、
didn't see
B、
wouldn't see
C、
hasn't seen
D、
hadn't seen
【正确答案】
D
【答案解析】
由于见朋友发生在过去(即昨天) ，而很久没有见到朋友自然是昨天的见面之前，即属于过去的过去，故用过去完成时。
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