In 1911, Madame Curie received a second Nobel Prize for her research, the first person in the world _____ two Nobel Prizes. [ ]

Will you see to ________ that my birds are looked after well while I’m away?[ ]

I just keep working hard as I have done, and ________ it will pay off It has done so far and so I just have to do the same

What do you think of your new neighbor— There are some things that are not easy to ______ and his coldness is one. He always behaves himself too proudly.

You shouldn’t talk until ________ to.