EVERY ONE OF THE BOYS AND GIRLS IN THE SCHOOL______ WHAT TO DO IF THE FIRE ALARM RINGS
19. Every one of the boys and girls in the school______ what to do if the fire alarm rings.
A. knows
B. know
C. to know
D. knowing
19. Every one of the boys and girls in the school______ what to do if the fire alarm rings.
A. knows
B. know
C. to know
D. knowing