問題詳情

10. It is true that helping the poor makes us happier than______ something we just want. 
(A)buy
(B)buys
(C)to buy
(D)buying

參考答案

答案:[無官方正解]
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)

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