题目

他们看上去这样苍老,那是因为他们曾经辛辛苦苦地劳动了十年。 答案:They looked so old.That's because they had worked hard for ten years.  表语从句,如果从句表原因,则用because 引导。比一比,写一写。柱( ) 堤( ) 眺( ) 赏( )住( ) 提( ) 跳( ) 尝( )
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