He asked several questions_______ the professor who gave us a lecture_______the balance of nature.
A. with; for B. from; of C. to; about D. of; on
He asked several questions_______ the professor who gave us a lecture_______the balance of nature.
A. with; for B. from; of C. to; about D. of; on
D
ask表示"提出请求或问题"时,其间接宾语可用of引出。后一空白填on表示书