题目内容
根据句意填上所缺少的单词，使句子完整。每空一词。
There is nothing in the box, so it's ________．
This morning the school bus ________ down on our way to school．So we had to walk to school．
Yesterday morning he overslept, but Luckily, he didn't arrive ________ for school．
As a student, you should hand ________ your homework every day．
My uncle and aunt are ________．They grow vegetables on their farms．
