Last night he ________only half an hour on his job．A.tookB.costC.paidD.spent
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D解析spend（花费时间、金钱）的主语必须是人。其后用on接名词或用in（通常省略）接动词的ing形式。如本句也可改为“...he sent...（in）doing his job．”其句意不变。take表示花费（时间、金钱），主语可以是“人”，也可以是一件事，常跟双宾语，如：（1）It took him only half an hour to do his job．／He took only half an hour to do his job．（2）It took me 10 yuan to buy the book（买这本书花了我10元。）（3）The writing of the article took me two days．写这篇文章花了我两天时间。pay支付：He paid rent．他付了租金。pay常与for连用，如：I paid ten yuan for the book．我花十元买这本书。cost（花费金钱）其主语是“物”而不是“人”，如；This book cost me ten yuan．／It cost me ten yuan to buy this book．我买这本书花了十元。