You ought to have put the milk in the refrigerator,now__________sour.
A.I smell B.it is smelt C.it smells D.it is smelling
You ought to have put the milk in the refrigerator,now__________sour.
A.I smell B.it is smelt C.it smells D.it is smelling
C
smell 是感官动词,相当于系动词,没有被动语态。