1。友谊可以拓展我们的视野。2。我认为Lucy很诚实。3。我肯定他们喜欢唱歌。4。我不太确定，Peter和Ann能成为好朋友，因为Peter对流行音乐不感兴趣，然而Ann却喜欢。
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1. Friendship can develop our view.2.I think Lucy is honest.3.I am sure that they enjoy singing.4.I am not sure Peter can make friend with Ann for he is not interested in music but Ann is.