The headmaster was______ as to how to inform her ofthe news that her daughter failed to pass the exam again

They looked _____ each other and kept their secret _____ themselves.

There is no doubt ____ we will host the2010 World Expo successfully

There’s a sign “Be quiet” on the wall of the reading room.—Yes. People ________ talk loudly in public.

Unwilling to wake up her sound sleeping husband, she ______ a note, telling him that she would come back very late, and put it under his pillow.