问题
填空题
[A] stamp
[B] zoo
[C] blackboard
[D] train
[E] post office
[F] park
[G] bank
People put it on an envelope.
答案
参考答案：A
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[A] stamp
[B] zoo
[C] blackboard
[D] train
[E] post office
[F] park
[G] bank
People put it on an envelope.
参考答案：A