You look so fired, Betty. –I _ _ slept at all and feel pretty awful.

When I meet difficulties, my mother always tells me __________ in myself and not to give up.

She ______ know the answer, but I’m not sure.

The United States is ____ the south of Canada and ___ the east of Japan. [ ]

Do you mind telling us something about this area?— Not at all. ________ of the land in this area _________ covered with trees and grass.