她决心要成为一名医生。

She's ___set ___her ___sights ___on becoming a doctor.

他决心要买下那幅画，并且拒绝放弃。

He had ___set ___his ___sights ___on buying the painting and refused to give up.

毕业后，他决心要进入一所顶尖大学攻读硕士学位。

After graduating, he ___set ___his ___sights ___on gaining admission to a top-tier university for his master's degree.