It's really noisy outside. I would appreciate if you raise your voice in order to make yourself in the back.
A. this; hear
B. that; heard
C. it; heard
D. you; hear
网友回答
A. this; hear
B. that; heard
(答案→)C. it; heard
D. you; hear
解析: I would appreciate it if you...这是一个习惯用法,意思是“假如说……我将感激不尽。”hear在这里充当yourself的宾补,与yourself成被动关系,要用过去分词。故选C.