【C8】A．contradictoryB．otherwiseC．indifferentD．possible

【C8】A．latelyB．beforeC．everD．never

【C8】A．fullyB．simplyC．seriouslyD．uniquely

A．yetB．otherwiseC．evenD．so

A．whereasB．otherwiseC．althoughD．while

【C7】A．unlessB．otherwiseC．ifD．because

【C4】A．butB．otherwiseC．neverthelessD．still