【C15】A．unlessB．so thatC．provided thatD．in order that

请根据选项回答（84）题：A.So asB.such thatC.as thatD.So that

【C17】A．thisB．thatC．itD．so

【C15】A．andB．becauseC．butD．so

【C15】A．UnlessB．IfC．BecauseD．Since

This hospital is______provides the best services in the city.A．whatB．thatC．one whichD．the

【C10】A．andB．thatC．butD．so