Darwin's theory of _______ explains that the strongest species can survive because they have the ability to adapt to the new environment better than others.

It was the case of any port in a _______ when the supermodel went to work in my centre after she had been unemployed for 10 months due to corona pandemic.

Engineers are building machinery to harness the power of ocean waves. As an abundant source of clean energy, wave power can be categorised along with (34) _______ sustainable energy sources, such as wind and solar power.

Monica, his mother agrees to _______ David, a robotic boy capable of human emotions.

Emily had just finished saving all the documents. The computer crashed then.

They _______ an old cottage in the Scottish Highlands because it was in bad condition.

The student had to keep his _______ to the grindstone all year and passed the entrance exam into the university he wanted.