--- Who helped you clean the classroom yesterday? --- _______. I cleaned it all by myself.

Charles Darwin, a young man just out of university, knew perfect well that he had to depend on _____ when he set out on a voyage of discovery around the world. 

 Kitty and I felt sick for ____________.

 Upon arriving home from a business trip, dad asked mum about my academic performance at high school and then _____ of my little sister, who was in junior school.

She wishes to become a beautiful girl, _____ everybody loves.