题目内容
单项填空 在A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
() 1. I still remember there used to be underground cave. My friends and I often had fun in 18-foot-deep cave.
A. an; an B. a; the C. an; the D. a; an
1. C
1. C
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单项填空 在A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
() 1. I still remember there used to be underground cave. My friends and I often had fun in 18-foot-deep cave.
A. an; an B. a; the C. an; the D. a; an
1. C