The website is very popular. And it’s amazing that __________ designer of it is just __________ nine-year-old child.
Scientists say it may be five or ten years___________ it is possible to test this medicine on human patients.
My uncle___________ until he was forty-five.
--What when I phoned you?
Sometimes words alone were not enough to _________pupils along the path of knowledge
. Neither of them knew what was doing.