单选题My father promised that&n

问题补充：

单选题Myfatherpromisedthathe___meaten-speedbicycleasapresent.A.bought forB.would buyC.had boughtD.has bought

答案：

B解析从promise(过去式) 来判断, “答应将要给我买一部10速的自行车,”, 所以选择用would buy.