单选题 There was so much noise that the speaker couldn't make himself ______.
A. heard B. to hear C. hearing D. being heard

【正确答案】 A
【答案解析】[解析] 当时噪音太大，以至于说话人不能使别人听清自己的话。heard是过去分词作宾语补足语，带被动含意。