One way to understand thousands of new words is to have________ good knowledge of basic word formation.
How long is it ________________ we last had a picnic together?
—What do you think of the concert? —I really enjoy it. I didn’t expect it was ____________ wonderful.
His best-known work that is ___________ all praise can be seen in the museum.
Europe has achieved more in controlling the AIDS virus than Asia in the past ten years, _________ the number of people infected with the virus is going up sharply.
For most Americans, their 18th birthdaythe end of one part of their life and beginning of another.