6. As there is less and less coal and oil, scientists are exploring new ways of making use of energy, such as sunlight, wind and water for power and fuel.
—What do you think of seven o’clock outside the cinema this evening? —That _______ me fine.
He’s got himself into a dangerous situation ________ he is likely to lose control over the plane.
What surprised me was not what he said but _______ he said it.
—Sorry to hurt you. —_______. You didn’t mean to, did you?
Whenever you enter the reading room, you can find all the students _____ at their desks, with their attention _____ on the books, except Tom.