Is Mr. Wang good at drawing his students into ________ discussion?

You have to believe in yourself. Self-confidence is _____ to success.

This construction firm has a long history, complete facilities, fine technique and     service.

--- What you’ve said sounds _____, but can we really solve the problem in that way?--- It is worth a try.

All in all, the TV programmes were peaceful and entertaining,but the following programme contains scenes that may be ______ to some viewers.