---Please _______ us in the discussion.

---I’d love to, but I’m far too busy at the moment.

A. attend　　　　　　　　　　 B. join　 　　　　 C. take part in　　 D. join in

---Please _______ us in the discussion．

---I’d love to, but I’m far too busy at the moment．

A．attend              B．join           C．take part in            D．join in