【B11】A．thereforeB．whereasC．soD．besides

【B11】A．neitherB．noneC．bothD．which

【B11】A．houseB．householdC．homeD．chicer

【B11】A．helpfulB．heavyC．healthyD．high

A．ThereforeB．HoweverC．SoD．otherwise

【C5】A．ifB．whereasC．whileD．although

【C8】A．ThusB．WhereasC．NeverthelessD．Yet