她雇佣了一位专门处理离婚案件的律师。

She hired a lawyer who ___specialises in divorce cases.

那家餐厅专营海鲜菜肴。

That restaurant ___specialises in seafood cuisine.

医学院毕业后，他希望专攻心脏病学。

After medical school, he hopes to ___specialise in cardiology.