The lecturer began by us where the island was, and went on about its
history.
A. telling；talking
B. to tell；to talk
C. telling；to talk
D. he told；talking
网友回答
A. telling；talking
B. to tell；to talk
(答案→)C. telling；to talk
D. he told；talking
解析：go on doing指继续做同一件事；go on to do指继续进行到下一件事。