She was surprised to find the fridge empty；the children _____ everything !

对下列句中加点词语的解释，正确的一项是（　　）

_________ pretty skirt you’ve bought for me! —I’m glad you like it.

Vivien worked very hard at all her lessons. ______, she became the top student in her class.

Tom with his parents______ to America. They_____ backin two weeks.