---Are Jim and Bob playing outside?----.They are doing their homework in the study.A. Eith

问题补充：

---Are Jim and Bob playing outside?

----.They are doing their homework in the study.

A. Either

B. Both

C. Neither

D. None

答案：

A. Either

B. Both

(答案→)C. Neither

D. None

解析：either任何一个；both两者都；None表示三个及三个以上都没有，指人； Neither表示两者都不。句意：吉姆和鲍勃在外边玩吗？——他们都没有。他们正在书房做他们的作业。故选C。