“There has been a lot of interest in the idea of life on Mars recently,” the researcher said. → ______________________________________________________________________.

The researcher said that there had been a lot of interest in the idea of life on Mars recently.

Nhà nghiên cứu nói rằng gần đây đã có rất nhiều sự quan tâm đến ý tưởng về sự sống trên sao Hỏa.