A．yetB．otherwiseC．evenD．so

A． ButB． HoweverC． EvenD． Though

【23】A．YetB．HenceC．ThusD．Besides

A．yetB．evenC．stillD．subsequently

A．whereasB．otherwiseC．althoughD．while

【C7】A．unlessB．otherwiseC．ifD．because

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