Complete the sentences with proper words (本题共10分，每小题2 分，每空一词）
The knife in the box is Toney's. (改为复数形式)
The __________in the boxes ___________Toney's.
I think he is very old.(否定句)
I __________think he __________ very old.
What does your father do? (变成同义句)
What is your __________  __________  ?
I learn English by listening to the radio. （对划线部分提问）
_________  _________ you learn English ?
Let’s go to school on foot,  _________  _________ ？（完成反意疑问句）