单选题 Don't drink the milk; it smells ______ sour.
A. as if it was B. like it is C. as if it is D. like it was

【正确答案】 C

【答案解析】like it is/was此结构不存在。由于跟过去无关，也不存在虚拟的情况，故选项C符合题意。