It's our duty to look after our parents when they are old.（用情態(tài)動(dòng)詞改寫句子）
→Wemust look after our parentsmust look after our parentswhen they are old.
【考點(diǎn)】固定搭配/句型．
【答案】must look after our parents
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/5/27 14:0:0組卷：5引用：2難度：0.6