答的好的给悬赏分!用适当的介词填括号部分
tom is ( ) home.he' s not ( ）school.
look,there are many apples ( ) the tree and mike is （ ) the tree
an old man is ( ) the tree
it is three o' clock ( ） the afternoon
i can see some cakes ( ） the plate
our reading room is （ ） the second floor
i like playing chess ( ) my father
please look ( ) the black board and listen ( ) the teacher