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最好帮忙解答下为什么这样选``1.Planting a tree is_______.Trees help control pollution.A fun B a fun C great funs2.My mother"s birthday is ________ of August.A at the seventh B in the seventh C on the seventh

题目详情
最好帮忙解答下为什么这样选``
1.Planting a tree is_______.Trees help control pollution.
A fun B a fun C great funs
2.My mother's birthday is ________ of August.
A at the seventh B in the seventh C on the seventh
▼优质解答
答案和解析
A be+adj,植树很有趣
C 在某天用on