Complete the conditional sentences with the correct forms of the verbs in brackets. Don't use contractions.

Write 1–3 words in each gap.

(The zero conditional) If you [ ] (not to charge) your smartphone, it [ ] (not to work).

(The first conditional) If you [ ] (to prepare) well, you [ ] (to pass) the test easily.

(The second conditional) If Mike [ ] (to want) to come with us, he [ ] (to call) us.

(The third conditional) If we [ ] (to start) doing karate, we [ ] (to be) able to protect ourselves.