History is the best teacher. It ________ records thedevelopment path of each country and foretells the future to us.

You won first in the Chinese characters spelling competition. Great!—______ !

When I was in hospital, my mother promised me that she would take me to Qingdao ________ I was well enough to travels, which ________ my recovery[ ]

afull preparation, the meeting wouldn’t have been so successful

In preparing scientific reports of laboratory experiments, you should _____ your finds in logical order and clear language.