It_______methreeyearstodrawthebeautifulhorses.
A、tookA
cost 的主语通常是事或物 (包括形式主语 it) ;spend 的主语只能是人，不能是事或物; take 的主语可以是事或物 (包括形式主语 it) ，也可以是人。 cost 的宾语通常是钱， take 的宾语通常是时间，而 spend 的宾语则可以是时间或钱。这句话运用的句型是 it take sb sth to do sth。
It is no use arguing _______ the plan because it has been rejected.
Nosoonerhadwereachedhome________aviolentstormbrokeout.
Theprofessoraskedaquestion,andDavid________agoodanswer.
Iftheoperation________carefullyprepared,itwouldnothavebeensuccessful.
After months of voyage, Columbus arrived in ______ later proved to be a new continent.
