6. This year, one in ______ high schoolers in the district are immigrant students.
(A) seven
(B) seventh
(C) sevenness
(D) sevenless
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統計: A(1), B(0), C(0), D(0), E(0) #2769084
統計: A(1), B(0), C(0), D(0), E(0) #2769084