In this museum a guider tour ___________ for you at no charge. A: being provided B: to provide C: is provided D: provides

Before the class, the teacher is _________, who plans what to teach, how to teach, and result to achieve. A: a planner B: a assessor C: a prompter D: guider

Before the class, the teacher is _________, who plans what to teach, how to teach, and result to achieve. A: a planner B: an assessor C: a prompter D: a guider