题目内容：
22. These virtual teaching facilities overseas students from Asia and Africa to learn a foreign language in a real-life situation for a minimum of three months.
A. prevent B. able C. enable D. prohibit
参考答案：
选择题：22. These virtual teaching facilities oversea
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learn a foreign language in a real-life situation for a minimum of three months.
A. prevent B. able C. enable D. prohibit