A big crowd gathered him .A. to hear ; speak 　B. hearing ; speakingC. to hear ; speaking

问题补充：

A big crowd gathered him .

A. to hear ; speak

B. hearing ; speaking

C. to hear ; speaking

D. hearing ; to speak

答案：

A. to hear ; speak

B. hearing ; speaking

(答案→)C. to hear ; speaking

D. hearing ; to speak

解析：第一空是不定式表目的；第二空是现在分词表进行。