We were having a picnic when _______ there came a downpour, which was really a wet blanket. A. all a...
2022-11-06 20:32:08 199次 2014-2015学年山东曹县三桐中学高二上期末英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
We were having a picnic when _______ there came a downpour, which was really a wet blanket.
A. all at once B. in addition
C. in return D. as well
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