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

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

出自：大学英语第二册

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