【C20】A．MoreoverB．HoweverC．ThereforeD．Whereas

【C20】A．moreoverB．howeverC．thereforeD．furthermore

【C2】A．moreoverB．howeverC．thereforeD．nevertheless

【C20】A．moreoverB．howeverC．stillD．yet

【C11】A．MoreoverB．HoweverC．AnyhowD．After all

【C6】A．besidesB．howeverC．thereforeD．undoubtedly

【C6】A．AndB．HoweverC．ThereforeD．So