6 The 2-year-old child is happily playing with his new toy. Obviously, he does not realize ______.
(A) his parents to leave him
(B) his parents leaving him
(C) his parents be leaving him
(D) that his parents are leaving him
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統計: A(19), B(55), C(16), D(140), E(0) #820536
統計: A(19), B(55), C(16), D(140), E(0) #820536