单选题 14.All of us would have enjoyed the party much more if there______quite such a crowd of people there.
【正确答案】 C
【答案解析】本句用了虚拟语气。主句中的would have done，表示“本来将(想)要发生某事，实际上并未发生”，即与过去事实相反，含有惋惜、庆幸之意。所以从句要用过去完成时。