阿摩線上測驗
37. Canned food needs _______ before it is served.
(A) to heat
(B) having heated
(C) being heating
(D) to be heated
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統計： A(48), B(28), C(13), D(231), E(0) #1573265
統計： A(48), B(28), C(13), D(231), E(0) #1573265
