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All the students were tired, but ________ of them stopped to have a rest．

A．both

B．none

C．any

D．neither

A traffic accident happened yesterday, but luckily, ________ of them were killed．

A．none

B．all

C．neither

D．both

－All the volunteers were very tired, but ________ of them took a rest．

－They were busy looking for the missing people．

A．neither

B．all

C．both

D．none