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题目内容
（国家开放大学婚姻家庭法学）
What type of message should you send in each of the following situations? You want to ask a coworker to play tennis on Saturday morning.
A.informal, oral, internal
B.formal, written, internal
C.informal, written, internal
A.informal, oral, internal
B.formal, written, internal
C.informal, written, internal
参考答案
