----- How about the book you are reading now?
----- Excellent indeed. You can find many problems we have e across in it.
A. covered
B. covering
C. are referred
D. referred
网友回答
(答案→)A. covered
B. covering
C. are referred
D. referred
解析：考查非谓语动词。句中covering作宾语补足语，与宾语many problems是主动关系。句意：——你现在看的这本书怎么样？——真好！它涉及／讲了我们学习过程中的很多问题．