1、How can you _____(证明）that you have finished it?

1、How can you _____(证明）that you have finished it?
2、Mr Jhons looked at the picture of the suspect _____(care)
3、The witness said the victim _____(want) to run away but he fell
4、你们知道谁报的警吗?
Do you know who _____ to the ______