If you drive along the river bank it will be twenty miles out of your way.

If you take your mobile phone into class, it must be turned off.

We do not use calculators when we write tests.

If you push this button, the volume will increase.

If you close the door, it will lock automatically.

I wear my old boots when I work.

When I cook salads, I use only olive oil.

When I concentrate, please do not make so much noise.

Unless prices rise, it will not be a good investment.