A. neitherB. either C. noneD. each

（) my mother （) Mary was unhappy.A. Either…andB. Both…andC. None.. ofD. Not only…bu

【C6】A．neitherB．noC．eitherD．an

● Each machine supporting TCP has a TCP transport entity, either a library procedure, a us

● Each machine supporting TCP has a TCP transport entity, either a library procedure, a us

【C7】A．neitherB．eitherC．oneD．each

【C9】A．neitherB．eitherC．oneD．each