I am very interested in this maths problem. Can you show me

Sarah pretended to be cheerful, ________ nothing about the argument.[ ]

Clare finally decided to leave the companyshe ____ for since she graduated from university.

Thanks a lot for your book. I found it veryinteresting.—- _______. I’m glad you enjoyed it.

shing machine is of excellent quality. If there__________ be any problem within the first three years, we would fix it forfree.