--- Look! They’re the old teaching building. --- It’s unwise to do that.A. putting down B.

问题补充：

--- Look! They’re the old teaching building.

--- It’s unwise to do that.

A. putting down

B. breaking down

C. burning down

D. tearing down

答案：

A. putting down

B. breaking down

C. burning down

(答案→)D. tearing down

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