Modern plastics can _________ very high and very low temperatures.
It is bad __________ for a man to smoke in public places where smoking is not allowed.
My neighbor is hard-working and warm-hearted. __________, I can't speak too highly of him.
Mr. Smith never does any reading in the evening; __________.
The foreigners are _______ by the __________ progress that the Chinese have made.
You say he works hard, __________ and __________.