1.At the age of seven,______.A.his father died B.he lost his fatherC.his dog followed him D.his

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1.At the age of seven,______.A.his father died B.he lost his fatherC.his dog followed him D.his

A.must B.should C.could D.had to D 他的父母都死于疾病所以在他14岁的时候他不得不供养他的家人.D d 不得不参考资料:0

B

只能选B,因为at the age of seven修饰的只能是儿子,所以父亲和狗都不能做主语。

B