It seems quite to expect a student to master 3000 words within only 2 days.
Of all __________ reasons for my decision to become a university professor, my father’s advice was __________ most important one.
In __________ review off 44 studies, American researchers found that men and women who ate six key foods daily cut the risk of __________ heart disease by 76%.
— I knocked over my coffee cup. It went right over __________ keyboard.— You shouldn’t put drinks near __________ computer.
Some kinds of animals can _______ the colour of their surroundings.
How I wish that I could ______ my ideas in simple and wonderful English when chatting on the net.