29 If you want to claim a tax _____, the products must remain unopened until you leave the country.
(A)repair
(B) refuse
(C) result
(D) refund
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統計: A(5), B(9), C(6), D(189), E(0) #3744903
統計: A(5), B(9), C(6), D(189), E(0) #3744903