单项选择题


Questions 19 to 21 are based on the conversation you have just heard.

A．Teach Don’s class while he is absent.
B．Give Professor Webster the key to Don’s office.
C．Make an appointment with the doctor.
D．Return some exams to the students.
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单项选择题
A．The performance required for a certain job.B．The required behavior, knowledge and skills.C．The training contents and methods required.D．The costs and the quality of the programme.
A．The performance required for a certain job.
B．The required behavior, knowledge and skills.
C．The training contents and methods required.
D．The costs and the quality of the programme.
单项选择题
A．In an airplane.B．In a hotel.C．In a restaurant.D．In a store.
A．In an airplane.
B．In a hotel.
C．In a restaurant.
D．In a store.
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