選擇正確的介詞填空.
1:They are singing and dancing _______ (in,on,under) the trees.
2:He opened the door _______(with,by,of) his key.
3:There is a hospital _______ (bu,in,near) our school.
4:Please tell me something _______ (abount,with,of) your family.
5:I sat _______(among,between,in) Tim and Tom.
6:Jim and Peter are _______(in,by,on) the same class.
7:It isn't good to laugh _______(to,with,at) others.
8:They should be here at six according _______(at,to,with) the plan.
9:My mother often goes to work _______(in,by,on) foot.
10:Would you like to paly football _______ (to,after,with) us?