Complete each sentence with a word from the box.

S \'

■ applies ■ available ■ confusing ■ curve Ш demand ■ exception

1 impressive ■ increase H a w

■ limited ■ set S shift К taxes

Some of the puzzles in this book are really

Newton’s ...........................of gravity explains whу things fall towards the earth.

There is a lot o f ...........................for organic fruit and vegetables these days.

When you throw a ball, it follows a ..........................back down to earth.

Gold is expensive because there is only a very..........................supply.

When a company stops making a product, it isn’t..........................any more.

Normally I arrive at work at 8.00 am, but Thursday is an ...........................

This ru le...........................to everyone in the school,even teachers.

Everyone who earns a salary must pay......................... to the government.

There has been a .........................in public opinion about the environment recently.


There has been a h u ge..........................in demand for air conditioners due to the hot weather.

12 Prices have b e e n .........................too high and nobody can afford the goods.

13I found the work you’ve managed to do very........................... Well done!