5. I have _____Helen for almost two years, and I don’t know how she has been now.
(A) not see
(B) to not see
(C) not to see
(D) not seen

答案：登入後查看
統計： A(1), B(0), C(1), D(3), E(0) #3408619

詳解 (共 1 筆)

#6774634
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