这些语法题可以填什么介词呢

这些语法题可以填什么介词呢
1.I'm not __ the mood for going to the party..
2.Since Harry isill,we need a substitute ___ him.
3.John gets ajob,so that he could be independent __ his parents.
4.A key ___ the back door is always kepton a high ledge above the door.
5.The movie actor does not try to concealhimself _____ his admirers.
6.I had _____ trouble with 7._____ car this morning.
8.At home,Miles Davis will play ____piano every night.
9.This is ____ first time that the childhas seen 10.___ elephant.