用: ourselves theirselves 造句各两个. 急!!!!!!!!!!!!!

ourselves
We ourselves built the house.
我们自己造的房子。
We renovated the old furniture ourselves.
我们自己动手把旧家具整修如新。
theirselves
However , those students theirselves(themselves ) to the postgraduate entrance examination will choose to sacrifice the holiday .
然而，那些决心考研的学生选择牺牲这个假日，全力以赴地投入到考研任务中。

Everytime I saw the people use they used to do to celebrate theirselves birthday , cut the birthday cake , light candle , flower , candy , gift and so on .
每当我看到人们以自己喜欢的方式庆祝自己的生日，蛋糕、蜡烛、鲜花、糖果、礼物等等，让我更难以明白。