Question

——How often do I need to feed the dog?
——It___food everyday, or it will be hungry.

A．must give

B．must be give

C．must be given

D．must be gave

Answer 1

C

句意：我需要多久喂一次這條狗？——必須每天喂它，否則它會(huì)餓的。結(jié)合語(yǔ)境可知下文主語(yǔ)it是動(dòng)作對(duì)象，故用被動(dòng)語(yǔ)態(tài)，選項(xiàng)BD過(guò)去分詞形式有誤，故選C。