The preschool children who watch TV programs with violent scenes are more likely to have sleep problems than those who watched programs for the age.

Is this red bag yours—No, it isn’t. is that black one.

Did you see a man in black pass by just now?—No, sirI __________ a newspaper

he question _____ at the meeting, no onecould answer it.

changes ______in the city, and a lot of factories ______