History is the best teacher.It _________ records the development of every period, whether it is good or not.
----- The boys are not doing a good job at all, are they? ----_____ .
___is it ____has made Peter___ he is today?
---- Wasn’t it Dr. Wang who spoke to you just now?---- ____.
----- Have you finished all of the exercises?---- Yes, completely. _____is left.
The population of China is larger than____ of Japan.