were nice to me when I was in the United States.A. The Brown’sB. Brown’sC. The Browns D.

问题补充：

were nice to me when I was in the United States.

A. The Brown’s

B. Brown’s

C. The Browns

D. Browns

答案：

A. The Brown’s

B. Brown’s

(答案→)C. The Browns

D. Browns

解析：谓语were 是复数，主语也要是复数意义，而The Browns “布朗一家”，是复数意义。