The exhibition tells us we should do something to stop air pollution.
—How many people are still leading ____ life under ___ poverty line in the world?—Perhaps one fourth.
He kept sending her presents in an attempt to win her _______.
The experiment turned out to be , which wasn’t ______ they wanted.
Mr. Barret doesn’t think that all bad language should be allowed. In his opinion, there are ______ that should be kept up.
—Have you heard that Tom, along with his parents, ____to Japan? —Really? No wonder I haven't seen him these days.