Why are you so anxious It isn’t your problem____.

下列加线的“相”字的用法，与其他三项不同的是（　　）

The young writer_____his success to his teacher’s encouragement.

Mr. Black used to be busy. But now he’s tired and , so he has plenty of time to exercise.

It was great joy 　　　　　　　he received the news that his long lost son would return home