Question

如何做这个选择题

Johnson suggested the problem worth paying attention to _A__at the meeting.
A be discussed B been discussed
C be discussing D being discussed

Answer 1

首先你需要明白这句话的主谓结构：Johnson suggested the problem ( ) at the meeting.
worth paying attention to 是定语，修饰the problem
实际上是the problem which is worth paying attention to ，是一个定语从句
而 suggest (that) sb. (should) do sth.故选项一定在A 或 C 中

其次你得搞清楚discuss的主语是problem
问题“被”讨论，所以用被动态be discussed 选A

Answer 2

Johnson suggested （that）the problem （should）worth paying attention to （被动，问题被讨论）be discussed at the meeting.
所以选A