他在伦敦政治经济学院学习过经济学。

He studied ___economics at the London School of Economics.

我妹妹在考虑明年上大学时攻读经济学。

My sister is considering studying ___economics at university next year.

政府的新政策将在我们明天的经济学课上讨论。

The government's new policy will be discussed in our ___economics class tomorrow.