阿摩線上測驗
44. Travelers bound _____ countries outside the Schengen Area must pass through additional security checks at the airport.
(A) for
(B) to
(C) across
(D) between
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統計： A(196), B(164), C(111), D(41), E(0) #3445992
統計： A(196), B(164), C(111), D(41), E(0) #3445992
