3.
(A)is focusing
(B)focuses
(C)is focused
(D)focusing
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統計: A(6), B(4), C(3), D(2), E(0) #3867436
統計: A(6), B(4), C(3), D(2), E(0) #3867436
3.
(A)is focusing
(B)focuses
(C)is focused
(D)focusing