My grandpa transplants some trees to his garden ________ it is the best time for them every year. A....
2023-01-15 01:47:17 164次 2011河南信阳高中毕业班第二次调研考试英语试题 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
My grandpa transplants some trees
to his garden ________ it is the best time for them every year.
A. where B.
when C.
that D.
until
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