I often see an old woman ____ the floor by herself.A.sweep B.sweep C.swept D.to sweptB是sweeps

I often see an old woman ____ the floor by herself.A.sweep B.sweep C.swept D.to sweptB是sweeps
I often see an old woman ____ the floor by herself.A.sweep B.sweep C.swept D.to swept
B是sweeps

I often see an old woman ____ the floor by herself.A.sweep B.sweep C.swept D.to sweptB是sweeps
A,B不是一样吗?如果没有打错的话,A,B都对.
理由:因为see doing和see do都是词组,但没有see doing,所以选A或B.
那B就是错的,答案是A.