题目内容

--- how was your weekend?
---- Great! It was my grandfather’s _______ birthday. We enjoyed ourselves.
A．seventyB．seventiethC． the seventiethD．seventeenth
D
本题难度适中，seventieth第七十的，seventy是七十，seventeenth是第十七的，答案选D，意思是爷爷的70岁大寿。
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