6. In the Netherlands, with its flat landscape and its bicycle-friendly traffic laws, many families in the country don't own cars. Instead, they usually______on bikes
(A) transmit
(B) commute
(C) export
(D) transfer
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統計: A(0), B(0), C(0), D(1), E(0) #3357152
統計: A(0), B(0), C(0), D(1), E(0) #3357152