I didn’t know . Can you tell me?A. who to speak toB. who speak toC. who to speakD. who spo

问题补充：

I didn’t know . Can you tell me?

A. who to speak to

B. who speak to

C. who to speak

D. who spoke

答案：

(答案→)A. who to speak to

B. who speak to

C. who to speak

D. who spoke

解析：A 考查疑问词+不定式。“和某人说话”speak to sb.，“和谁说”who to speak to。