Question

Doctors claim that old people are not likely to ________ Parkinson's disease, as long as the brain ________ enough exercise．

1. A.
   suffer，gives
2. B.
   be suffered，is given
3. C.
   suffer，is given
4. D.
   be suffered，gives

Answer 1

C
这句句子的意思是“医生认为如果让大脑得到足够的锻炼，老人们就不容易得帕金森氏病。”suffer虽然是一个及物动词，但是不能用于被动语态。