When the H1N1 virus____ at first in Mexico, no one had the least idea that it would spread so rapidly throughout the world.
It was necessary to _____ the factory building as the company was doing more and more business.
On turning the corner, we saw the road _____ steeply.
There are three basic ways of _____ language to writing, and all known graphic systems use one or a combination of these.
I hope my teacher will take my recent illness into _____ when judging my examination.
Your essay is quite good: just _____ it _____ with a few illustrations and quotations.