单选

Which of the following is most effective for a teacher when students do not understand how to do an activity that he/shehas described?

A Demonstrating how to do it

B Asking students to talk freely

C Encouraging students to share theirideas

D Walking around the classroom and answering questions

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Which of the following is most effective for a teacher when students do not understand how to do an activity that he/shehas described?

A Demonstrating how to do it B Asking students to talk freely C Encouraging students to share theirideas D Walking around the classroom and answering questions

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A Demonstrating how to do it

B Asking students to talk freely

C Encouraging students to share theirideas

D Walking around the classroom and answering questions