If you (to drive) along the river bank it (to be) twenty miles out of your way.
If you (to take) your mobile phone into class, it (must) be turned off.
We (not use) calculators when we (write) tests.
If you (to push) this button, the volume (to increase).
If you (to close) the door, it (to lock) automatically.
I (to wear) my old boots when I (to work).
When I (to cook) salads, I (to use) only olive oil.
When I (to concentrate), please (not to make) so much noise.
Unless prices (to rise), it (not to be) a good investment.
Unless someone (to ask) you politely, (to refuse) to do anything. Поставить все в Zero Conditional
1. If you drive along the river bank it will be twenty miles out of your way.
2. If you take your mobile phone into class, it must be turned off.
3. If you close the door, it will lock automatically.
4. When I cook salads, I use only olive oil.