I am too busy to listen to her talking. She has talked for about two hours.A. hopelessB.

问题补充：

I am too busy to listen to her talking. She has talked for about two hours.

A. hopeless

B. endless

C. harmless

D. careless

答案：

A. hopeless

(答案→)B. endless

C. harmless

D. careless

解析：根据意思来选B，为无止境的说话，故选B