几道关于介词的英语题~

几道关于介词的英语题~
1.I won't stay____bed,I'll just lie down____the bed for half an hour.
A.in...on B.on...in C.in...in D.on...on
选A
2.What's the differense in pronunciation____the three words?
A.between B.among
选A （不是三个或三个以上用among的吗?）
3.The adventurer left the boat,____which he had come to the island.
A.by B.in C.from D.to
选B
4.He stoped at the door____that of the girl.
A.next to B.in front of
选A