History is the best teacher. It _______records the development path of each country and foretells the future to us.

 If you haven’t had enough sleep, your actions will give you _____ during the day.

.--- Robert, you didn’t travel by train?--- I was going to, but then I decided to go by car______.

Netizens called the fashionable homeless man the “beggar prince”, or, ____________, “Brother Sharp”.

He had planned to make a compromise，but        he changed his mind at the last minute.