It _______ me three years to draw the beautiful horses.
A
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ittakesbsthtodosth。
Aftermonthsofvoyage,Columbusarrivedin______laterprovedtobeanewcontinent.
Wateriscomposed_______hydrogenandoxygen.
Thebookfairhasreceivedapositive________fromreaders.
Theyareeager_______abroad.
Theprofessoraskedaquestion,andDavid________agoodanswer.
