—You seem familiar with Mr. John?—Sure, we ______ together for three years in the 1990s.

Those flowers were ___________ for your mother on her seventieth birthday, but as she is away, I would be glad if you accept them.

The teacher stressed again that the students should not _________any important details while retelling the story.

The cigarette end thrown away by a careless farmer ______ the big forest and brought us great loss.

Happiness is a feeling and neither high position nor a large amount of money can ______ it.