问题
单项选择题
The trip to the museum has been（）until Thursday 11th March.
A.lengthened
B.postponed
C.frowned
D.cancelled
答案
参考答案：B
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The trip to the museum has been（）until Thursday 11th March.
A.lengthened
B.postponed
C.frowned
D.cancelled
参考答案：B