21 After he quit the country with a runaway foreign worker, the man had various adventures from what he learned many lessons, some of which are about racial discrimination and some about human solidarity.
(A)he quit the country
(B)a runaway foreign worker,
(C)from what
(D)some of which

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統計： A(0), B(0), C(1), D(0), E(0) #3753896