【C17】A．performanceB．introductionC．expressionD．behavior

【C17】A．freedomB．freeC．somethingD．money

【C17】A．relievedB．delegatedC．approvedD．performed

【C17】A．thisB．whereC．thereD．that

【C2】A．preparationB．introductionC．anticipationD．intuition

A．performanceB．securityC．satisfactionD．stability

______is the knowledge of the rules of an ideal speakers language.A．PerformanceB．CapacityC