The factory used 65 percent of the raw materials, the rest of which _____ saved for other purposes.
Unfortunately, the research was limited __________ increasing economic profits,__________ protecting the environment.
They are trying to find a new way to __________ the spread of AIDS.
They will have you __________ if you don't pay taxes, because it is everyone's duty to pay taxes.
She was __________ for helping the murderer to escape.
There are so many viruses on the Internet. If __________ accidentally, the viruses may make your computer break down.