6. People should ________ the unique laws and traditions of the country that they visit.
(A) have been subjected to
(B) being subjected to
(C) be subjective to
(D) be subject to
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統計: A(43), B(42), C(91), D(186), E(0) #2310643
統計: A(43), B(42), C(91), D(186), E(0) #2310643