Lead inRockets _ (use) to send up satellites are used一般现在时被动语态结构火箭发射图The rocket _ (send up) into space is being sent up现在进行时被动语态结构污染图The air and the water _(pollute) are beingpolluted现在进行时被动语态结构砍伐图Trees _(cut) down Soil _ (wash) away are being cut will be washed 现在进行时被动语态结构一般将来时被动语态结构拳击图A boxer _(beat) downhas been beaten现在完成时被动语态结构双子楼图The twin towers _ (attack) in 2001 were attacked一般过去时被动语态结构Saddam got _ (arrest) in his hometown.arrested一般过去时被动语态结构生病图The boy may _ (infect) with AIDS have been
