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We'llplanttreestomorrow.(用atthistimeyesterday改写)Wetreesatthistimeyesterday.

题目详情
We'll plant trees tomorrow.(用at this time yesterday 改写)
We ___ ___ trees at this time yesterday.
▼优质解答
答案和解析
were planting
at this time yesterday.是过去进行时的标志.
所以 用 were planting