—I wonder if you could go with me to the cinema.— Don’t disturb me. I ______ a composition all the morning and haven’t finished it yet.
The rule is true __________ all cases.
Don't worry; the guide will tell you how to avoid __________ ill while travelling.
Money ________ happiness; you need a certain amount (数量) to live comfortably, but more money does not necessarily buy more happiness.
With the price rising, $100 a month could hardly ________ the cost of his life in such a big city.
No sooner __________ the office than __________ his computer to check his e-mails.