—Can I help you with it?—I appreciate your ______, but I can manage it myself.
As a result of destroying the forests, a large of desert __________ covered the land.
Plastic parts can __________ metal ones in many machines. But they don't last long.
Large quantities of china made in Dehua __________ to the US and Europe.
-It's said that scientists have made __________ big breakthrough in the cancer treatment. -If so, many people can have been brought back to __________ life !
The police __________ searching for the murderer everywhere when he suddenly appeared in a theatre.