题组训练二   辨析 when与while
when        while
【小题1】—________ did the online concert begin?
—You didn’t miss anything. It has just begun.
【小题2】—Learning to love is like learning to walk.
—Yes. ________ we step out bravely, we can find it easy.
【小题3】________ Tan Dun was young, he once made music with common objects like stones and paper.
【小题4】Kate wanted to turn the room into a study, ________ her husband preferred a kitchen.
【小题5】—Mom, I want to watch the news about our school. Change the channel, please!
—What a pity! It is eight o'clock now. It has been over for a ________.