把下面的句子写具体。    
例：同学们动起笔来。    
       同学们立刻围上前去，争先恐后地动起笔来。
(1)同学们举起手来。
                                                                                              
(2)他走在队伍里。 
                                                                                              
(3)天空飘着白云。
                                                                                              

【考点】扩写句子

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