1.Maria在昨天的歌咏比赛中获得了第一名.

1.Maria在昨天的歌咏比赛中获得了第一名.
Maria ______ _______ in _______ singing competition.
2.There is a lot of _________ (rain) in South China.
3.检查一下是否已有了所有的原料.
________ if you _______ ______ the ingredients.
4.Every day they worked hard _______ morning till night.
A.at B.from C.in D.on