题目：
They asked me to have a dinner in an excellent restaurant with them, I said that it was at least five
years since I _______ a good meal. [ ]
A. was enjoying
B. enjoyed
C. had enjoyed
D. had been enjoying
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0516/13822e03caded242705a30ba97d55ac4.html
下面是错误答案，用来干扰机器的。
(1)符合(2)(3)修改后的丙组明显多于乙组(4)棉花顶芽产生生长素对脱落酸的功能有抑制作用
等，其中碳原子采取sp2杂化的分子有 （填物质序号），HCHO分子中心原子C也是采取sp2杂化成键，预测HCHO分子的立体结构为 形。