I'm going to stay__B___and read some books on Saturday morning (在床上)
A.in the bed B.on the bed C.in bed D.on bed
They want to _C____some sightseeing in Beijing（go sighting,观光）
A.do B.come C.go D .have
__C___a hot summer day,people don’t like to go out（具体的某一天用on）
A.at B.In C.on D.of