15. Mary was too tired to cook a regular meal, so she called and ordered some fast food _____.
(A) deliver
(B) to deliver
(C) to be delivering
(D) to be delivered
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統計: A(20), B(37), C(0), D(209), E(0) #888160
統計: A(20), B(37), C(0), D(209), E(0) #888160