【题目】The upset mother thought to herself, “If only I ______ what’s going on in my little boy’s head right now.”
A. know B. knew C. have known D. had known
在线课程【答案】B
【解析】
试题分析：考查虚拟语气。句意：沮丧的妈妈自言自语道：“如果我知道我的孩子现在在想什么就好了”if only，如果……就好了，引导的句子需用虚拟语气。由句意可知，与现在事实相反，所以用一般过去时，故选B项。