不断上涨的生活成本令许多家庭感到担忧。

The rising cost of living ___concerns many families.

病人对治疗没有反应，这令医生很担心。

It ___concerns the doctor that the patient is not responding to treatment.

环境污染持续令全世界的科学家感到忧虑。

Environmental pollution continues to ___concern scientists worldwide.