15. These birds are the only kind you can see here in January because _____ other kinds of
birds fly south for the winter.
(A) all
(B) both
(C) few
(D) some
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統計: A(27), B(3), C(3), D(10), E(0) #3263610
統計: A(27), B(3), C(3), D(10), E(0) #3263610