13. It’s my father’s birthday, but I ________ him a present yet!
(A) have bought
(B) had bought
(C) hadn’t bought
(D)haven’t bought
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統計: A(25), B(12), C(50), D(416), E(0) #1537740
統計: A(25), B(12), C(50), D(416), E(0) #1537740