34.
(A)ccording to the passage, where can gray water be used?
A in the shower
(B) in the swimming pool
(C) in the dishwasher
(D) in the toilet
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統計: A(2), B(4), C(4), D(13), E(0) #591981
統計: A(2), B(4), C(4), D(13), E(0) #591981