The problem ________ when the students refused to do their homework.

For the new country to survive, ________ for its people to enjoy prosperity, new economic policies will be required.

She had clearly no ________ of doing any work, although she was very well paid.

The wealth of a country should be measured ________ the health and happiness of its people as well as the material goods it can produce.

When workers are organized in trade unions, employers find it hard to lay them ________.

It's more ________ to buy a season ticket if you travel every day.

To study a foreign language, __________.

He thoroughly understood the society __________.

As you like pop music, __________ I like literature.

I bought this eighteenth century writing desk at a quite ________ price.