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)test. 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.

Here are the completed sentences with the verbs in their correct forms, primarily using the Zero and First Conditional structures, as well as the Present Simple for habitual actions. Completed Sentences

• 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 increases.
• If you close the door, it locks 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.
• Unless someone asks you politely, refuse to do anything.

Grammar Explanations

Would you like me to create a short practice quiz based on these conditional structures to help you reinforce these rules?