He suggested the problem worth paying attention ______ at the meeting.

A. to be discussed          B. to being discussed   C. to discuss               D. to discussing

He suggested the problem worth paying attention ______ at the meeting.

A. to be discussed    B. to being discussed

C. to discuss    D. to discussing

He suggested the problem worth paying attention_____ at the meeting.

A.to be discussed       B. to been discussed  

C. being discussed      D. be discussed

He suggested the problem worth paying attention____at the meeting.

A.to be discussed　　 B.to being discussed　　　 C.to discuss　　　　 D.to discussing

He suggested the problem worth paying attention ____________ at the meeting．

 A. to be discussed        B. to discussing         　 C. to discuss            　 D. to being discussed