Choose the best prepositions to complete the sentences.

Choose the correct option.

Scientists must carry [through|off|out|on] a lot of experiments to prove their theories.

Thanks to his determination and perseverance, he carried [through|off|out|on] the award.

I will carry [through|off|out|on] a talk with him next week.

Mary is going to carry her ideas [through|off|out|on] in spite of all the difficulties. I am sure she will succeed.