in the ground还是on the ground?讲点知识点.Thanks.

in the ground还是on the ground?讲点知识点.Thanks. on the ground还有near the ground under the ground in the ground? The snow on the ground is one foot th--- in the ground 和on the ground的区别 in the ground和on the ground的区别 是in the afternoon of April 30th 还是 on the afternoon of April 30th be let in on the ground be let in on the ground on the play ground 还是 in the play ground还有,是on the street 还是 in the street.像这样的on 还是 in 有什么一般规律吗?还是完全是习惯用法 英语方面的.速度回答on the morning of 3th May还是in the morning of 3th May throw the rubbish to the ground 还是on the ground为什么 on the ground 用所给的词连成一句话：two ,workers ,dig ,holes ,ground ,another ,worker ,plant tree ,in ,hole可以加其它一些词.是in the ground还是on the ground有一个明确的标准或规定吗？ In autumn most l________ fall on the ground. Tom's father came back()the afternoon of March 12th.用in还是on? I was born _ the moring of May 7th 用on 还是 in ----the afternoon of March 8th填什么介词In还是On On March 15th this year不好意思问题没打完On March 15th this year，sb did sth …… the morning用in 还是 on