问题
选择题
He looked quite healthy though he was ____.
A．in seventy
B．in his seventies
C．at seventies
D．age of seventy
答案
B
固定用法，表示在某人多少岁时。in one’s +基数词的复数="more" than +基数词原形
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He looked quite healthy though he was ____.
A．in seventy
B．in his seventies
C．at seventies
D．age of seventy
B
固定用法，表示在某人多少岁时。in one’s +基数词的复数="more" than +基数词原形