问题:

试题 题型:未知 难度等级:

当老师宣布开始上课时,班长应该说: [ ] A. Sit

当老师宣布开始上课时,班长应该说:

[     ]

A. Sit down, please.
B. Good morning, teacher.
C. Stand up, please!
D. Thank you, teacher.

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