22. This vessel had a crew of 18 Ukrainian nationals, all of whom were appropriately qualified for
the positions they held on _______ board the ship.
(A) who
(B) which
(C) whom
(D) where
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統計: A(36), B(149), C(372), D(77), E(0) #1497070
統計: A(36), B(149), C(372), D(77), E(0) #1497070