There are _____ books in the library, and about _____ of them are in English.

ess is a butterfly, which, when pursued, is always just beyond your grasp, but ________, if you will sit down quietly, may alight upon you.

u must apologizeto Rebecca for being so rude, Sam.—Why________ I say sorry It’s she ________ said insulting words first.

George is not here. What’s the matter with him-Her father is ill in hospital. She has to_____ him.

My friend, who _____on the International Olympic committee all his life, is retiring next month. [ ]