1．Tom had arrived at the ________________(定好的时间), while John had broken ________________(失约) for some reason.
2．I was told the Learning Center provides help for students and I am ________________________________(急于得到帮助) from you.
3．Look! Many children are ________________________(走向) to the beach.
4．The whole building had already been ____________________(烧成平地) when we got there.
