I worked ___2:00 am to finish my schoolwork 填什么介词.Shall we make fruit salad?(同义句)

I worked ___2:00 am to finish my schoolwork 填什么介词.Shall we make fruit salad?(同义句)
Shall we make fruit salad?同义句
题目给的是___ ___fruit salad.前面两个空 都不是两空的。