【C6】A．In factB．In additionC．In generalD．In theory

【C10】A．ThereforeB．In additionC．In contrastD．Nevertheless

【C10】A．In totalB．In additionC．In turnD．In general

【C19】A．Above allB．In additionC．GenerallyD．However

【C17】A．In factB．ContrarilyC．LuckilyD．Naturally

【C6】A．NeverthelessB．In additionC．UndoubtedlyD．In contrast

【C11】A．In principleB．In additionC．In particularD．In summary