问题补充：
8.Only by shouting at the top of his voice .
A. was he able to make himself heard
B. he was able to make himself heard
C. was he able to make himself hear
D. he was able to make himself hear
答案：
(答案→)A. was he able to make himself heard
B. he was able to make himself heard
C. was he able to make himself hear
D. he was able to make himself hear
解析：
