A．HoweverB．ThereforeC．FurthermoreD．Nevertheless

【C19】A．ThereforeB．MoreoverC．FurthermoreD．However

【C9】A．HoweverB．ThereforeC．EvenD．But

【C16】A．HoweverB．ThereforeC．MeanwhileD．Instead

【C6】A．SimilarlyB．ConsequentlyC．FurthermoreD．Nevertheless

【C9】A．EvenB．ThereforeC．FurthermoreD．But

【C9】A．HoweverB．FurthermoreC．ThereforeD．Nevertheless