What's did you do___the farm?We planted some trees for the farmers.a.on b.in c.at d.to
问题描述：
What's did you do___the farm?We planted some trees for the farmers.a.on b.in c.at d.to
答
on,在农场用介词On到底是on还是at？是On，固定搭配，in the field，on the farm在田野