Once upon a time, a (n)__________ famous scientist said that life was not easy for any of us but first of all we should believe in ourselves.
Throughout the world _______ advance has been made in science and technology is due to education which brings forth knowledge, creation and inventions.
--What made your father throw up last night?--I think the large quantities of wine __________.
The manager has to get all these washing machines______________.
The air company going from bad to worse, the workers____________ hardly enough to make a living.
The question came up at the meeting____________ we had enough money for our research.