题目内容
单项填空,从A、B、C、D四个选项中选出可以填入空白处的最佳选项
This is _______ important book. It helped me a lot in ________ old days.
A. a; an B. an; the C. the; an D. /; the
B
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单项填空,从A、B、C、D四个选项中选出可以填入空白处的最佳选项
This is _______ important book. It helped me a lot in ________ old days.
A. a; an B. an; the C. the; an D. /; the
B