The footprints are quite ______;they must befresh. [ ]

The big earthquake is reported to have ____ more than 4,000 people homeless.

I am really surprised that a policeman in his car _____ have hit several common pedestrians, killing one and injuring three.— Yes, If one _____ ask for trouble, what can we say?[ ]

I like our teachers because they can allow us _________what we think.

Robots can help people do much work, and they never get .