问题
Only ______ a human being.
A:when is ithungry a lion will attack
B:when it ishungry a lion will attack
C:when it ishungry will a lion attack
D:when is ithungry will a lion attack
B:when it ishungry a lion will attack
C:when it ishungry will a lion attack
D:when is ithungry will a lion attack
正确答案是：
