Inventions and Lifestyles. Adverb Clauses with Time, p.126

I always have breakfast … I leave home.

I was not at home … he came to see me.

… she finished that project, she started working on the next.

… I have finished my work, I will accompany you to the park.

I will start … I am ready.

You can stay with us ....... you find suitable lodgings.

The phone was ringing ....... I was having a bath.

....... I help him with his homework, he won't be able to do it.

She never uses her laptop ...... the battery is low

We will be surfing the Internet ..... Wi-Fi works.