Every boy and every girl ______ that each day and each hour brings ______ duty.
A．know；their B．knows；their
C．knows；its D．know；its
Every boy and every girl ______ that each day and each hour brings ______ duty.
A．know；their B．knows；their
C．knows；its D．know；its
C
此题考查主谓一致。“every/each＋单数名词＋and＋every/each＋单数名词”作主语时，谓语动词用单数形式。