Joe Jones, the eldest of the eight children, had to ________ out of high school at the age of 16 to help his father on the farm
A.leave
B.drop
C.fall
D.go
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B解析试题分析：句意：Joe Jones是八个孩子中最大的，他16岁时不得不从高中辍学去农场帮助父亲。the eldest of the eight children 作Joe Jones的同位语；A．leave离开；后直接跟名词，不用接out of；
C. fall 落下；
D. go去；
B. drop out of…表示“退出，离开……”，是固定短语，故选B。考点：考查动词辨析。