题目

小明用平面镜将一束太阳光反射到竖井底（如图所示），请在图上作出平面镜的位置。 答案：略— I regret _______ you that you failed the exam. — How I regret _______ so much time playing computer games. A．telling; wastingB．telling; to wasteC．to tell; wastingD．to tell; to waste