he is poor, he’s ready to help his friends who are in trouble, which makes him very popular

What’s the ______ of success—First of all, youhave to know for sure what you really want.

下列各句中加线的成语，使用不恰当的一组是  （    ）

How long has the train been away—Sorry. I don’t know. By the time I got here, the train ________.

The next day, the group of villagers had not gone very far ____ they entered a very narrow passage between two mountains.