________ time went by, small clever animals covered the earth and have become the most important ani...
2023-01-01 17:45:09 21次 2014届福建省高一下学期期末考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
________ time went by, small clever animals
covered the earth and have become the most important animals on the planet.
|
A．With
|
B．As
|
C．Because
|
D．During
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本题链接：
