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【单选题】
You are far away from your friends and family.
A.
Exchange programs are good.
B.
Exchange programs are difficult.
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】You don't understand the language and customs.
A.
Exchange programs are good.
B.
Exchange programs are difficult.
【单选题】You can learn about the food, holidays and customs.
A.
Exchange programs are good.
B.
Exchange programs are difficult.