When was the strange machine invented by you?
Where are the trees planted?(我认为本句应该用一般过去时态,也就是are改成were)
1.When did you invent the strange machine 2.Where do people plant the trees (都改为被动语态)
1.When did you invent the strange machine 2.Where do people plant the trees (都改为被动语态)
英语人气：117 ℃时间：2020-01-10 12:58:29
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