英语词汇题,

问题描述:

英语词汇题,
the doctor said that was a very rare _____ of the illness(case)
they have little money,so they can not _____ (支付得起)
I ____ Daniel as my best friends(treat)
the doctor will be ____ before they are sent to the disaster areas(train)

the doctor said that was a very rare __case___ of the illness(case)they have little money,so they can not __afford___ (支付得起)I _treat___ Daniel as my best friends(treat)the doctor will be __t...最后一个为什么是trained不是training用trained 是被动语态,医生接受训练的意思,而如果用training,就是现在进行时,医生正在训练,后面没有宾语,而且与before 引导的状语从句意思冲突。