Упражнение 1. Zero Conditional. Вставьте глагол в нужной форме, чтобы образовать условные предложения 0-го типа.

Решение:

1. If you drive (to drive) along the river bank it is (to be) twenty miles out of your way.
2. If you take (to take) your mobile phone into class, it must be (must) turned off.
3. We do not use (not use) calculators when we write (write) tests.
4. If you push (to push) this button, the volume increases (to increase).
5. If you close (to close) the door, it locks (to lock) automatically.

Ответ: drive, is; take, must be; do not use, write; push, increases; close, locks.