Helen has two sisters and a brother. Her brother is working, but her sisters are still at

发布时间：2020-08-21 01:10:29

Helen has two sisters and a brother. Her brother is working, but     her sisters are still at school.
A. neither
B. either
C. all
D. both

网友回答

A. neither
B. either
C. all
(答案→)D. both
解析：both 表示的是两者都，根据上文的意思，选D，符合题意。
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