Complete the sentences with the correct forms of the verbs.

Write 1–3 words in each gap.

to have, not to come, to stop, to become

If a motorbike runs out of petrol, it [ ] moving.

If my brother practices playing the guitar every day, he [ ] a skilled musician.

If I communicate effectively with others, I [ ] more friends.

Mary won't know what to do if Jenna [ ] to her.