.The man to whom we handed the forms pointed out that they had not been ________ filled in.

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

After Ya’an earthquake the school practiced an emergency drill showing the children how to         find their “safe place”____. 

A Korean survey shows that shopping cart handles are the most bacteria-carrying items among some ________used objects.

Although ____ my opinion, the old professor didn’t come up with his own.