他當時肯定負債累累，因為我聽說他靠賣血為生。（情態(tài)動詞）He must have been heavily in debt because I heard that he made a living by selling blood.He must have been heavily in debt because I heard that he made a living by selling blood.
【考點】固定搭配/句型．
【答案】He must have been heavily in debt because I heard that he made a living by selling blood.
【解答】
【點評】
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發(fā)布：2024/4/20 14:35:0組卷：2引用：1難度：0.5
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