Bob’s lectures a fairly wide range and I can’t sum up what he says in a few sentences.
A. covered
B. conveyed
C. considered
D. manded
网友回答
A. covered
B. conveyed
C. considered
D. manded
解析：A
解析 根据“I can’t sum up what he says in a few sentences”可知，这些报告覆盖面很广。cover涵盖，涉及，符合题意。