来自谷利民的问题
Ittookusthreeyearstofinishthehardhardwork.改为同意句
Ittookusthreeyearstofinishthehardhardwork.改为同意句


Ittookusthreeyearstofinishthehardhardwork.改为同意句
Ittookusthreeyearstofinishthehardhardwork.改为同意句
Wespentthreeyears(in)finishingthehardwork.
首字母要大写