20. The owner of the monkey has been criticized________ the animal to a small cage.
(A) confines
(B) had confined
(C) for confining
(D) may confine
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統計: A(13), B(12), C(412), D(4), E(0) #2982917
統計: A(13), B(12), C(412), D(4), E(0) #2982917