It _____ everyone to hear all of the villagers behind the mountain were killed in the flood.[ ]

His first lecture is of great use to our development. But his latest one is ______ worth attending.

Under the environment of fierce competition, the only way John could imagine _______ stress was to get tougher by making greater efforts.

Tom, you will ________ the department until the end of this month.Next month you’ll be rearranged.

The greatest pleasure I know is to do a good action quietly, and to have it _____ by accident[ ]