The students are cleaning their classroom. are cleaning the windows. are cleaning the chairs.
A. Some; Others
B. Some; Another
C. Others; The others
D. Some ; Other
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(答案→)A. Some; Others
B. Some; Another
C. Others; The others
D. Some ; Other
解析:some…others…表示一些,另一些,此处others相当于other students,并且此处无确凿范围,故选A