以下题用in还是on?1.( ) the morning.在早上2.( ) monday .在星期一 3.( ) the monday morning .在...以下题用in还是on?1.( ) the morning.在早上2.( ) monday .在星期一 3.( ) the monday morning .在星期一早上.

以下题用in还是on?1.( ) the morning.在早上2.( ) monday .在星期一 3.( ) the monday morning .在...以下题用in还是on?1.( ) the morning.在早上2.( ) monday .在星期一 3.( ) the monday morning .在星期一早上. walk on the street还是用in? 用in还是on （ ）the right fly on the 是用on还是用in? in the space station还是on the space station在太空站用in还是on 在山上用in还是on野餐用on the hills 还是 in the hills in the town还是on in还是on the blackboard in还是on the newspaper in the photos 还是on? on the moring还是in the moring请问如题, 第二题是on the farm还是in the farm? 是用in the sofa还是on the sofa? 五官用on the face还是in the face 应该用on the weekend 还是 in the weekend? 用in the island 还是 on the island?哪个对? on the sofa还是in the sofa on the bed还是in the bed on the chair还是in the chairon the sofa还是in the sofa on the bed还是in the bed on the chair还是in the chair?急!~~~在什么情况下用in什么情况下用on呢?请高人指点啊·· on还是in the football field..在足球场上踢足球用on还是in?