It's in the left side of the post office还是It's on the left side of the post office.还是It's in left side of the post offic

问题描述:

It's in the left side of the post office还是It's on the left side of the post office.还是It's in left side of the post office.还是It's on left side of the post office

It's on the left side of the post office
以上四种只选这个
on 和 side搭配
冠词不要省