my job ______ the animalsA is feedB is to feedingC is to feedD feed

my job ______ the animalsA is feedB is to feedingC is to feedD feed
my job ______ the animals
A is feed
B is to feeding
C is to feed
D feed

my job ______ the animalsA is feedB is to feedingC is to feedD feed
C,用排除法,其他几个都有很明显的语法错误．A要接ING,B不用加ING,D至少要用S．
再说本句确实是用带TO动词是最正确的说法．
My job is
to feed the animals.
这样断句．．
to feed表示的是一个状态,因为feed是一个动词,所以不能做表语,加上to就可以了.
如果表示的是行为或者动作,可以用feeding the animals,用法与动名词相同．
my job is to do sth,表示的是状态,我的工作是．．．,这样表达是最正确的．

My job is feed animals.不就行了吗,为什么要在is后面加to??

c