题目内容
() 10. Being volunteers is , as they need to.
A. a hard work;hard work B. hard work;hard work
C. a hard work;work hard D. hard work;work hard
10.D
10.D
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题目内容
() 10. Being volunteers is , as they need to.
A. a hard work;hard work B. hard work;hard work
C. a hard work;work hard D. hard work;work hard
10.D