6.

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統計： A(40), B(12), C(0), D(0), E(0) #3822976

詳解 (共 1 筆)

#7331571
A. scaffolding has been erected against a building. 
B.A walkway is being paved with bricks. 
C. Workers are demolishing a wall. 
D. Several windows are being replaced.
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