Question

--- How about the book you are reading now?
--- Excellent indeed. You can find many problems we have come across _____ in it.

1. A.
   covered
2. B.
   covering
3. C.
   are referred
4. D.
   referred

Answer 1

A
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．