- 题目中心
---Did Alan enjoy seeing his old friends yesterday?
---Yes, he did. He ______his old friends for a long time.
（2分）
Adidn't see
Bwouldn't see
Chasn't seen
Dhadn't seen
参考答案：（本答案仅供参考，请以官方发布为准。）
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D
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