Which of the following sentences as the CORRECT WORD ORDER?

Matt was too weak to carry the boxes himself, ............... he asked his neighbor Chris to help him.

Ben: Have you read the most important text in the course materials yet? Mike: Yes, I read ......... last week.

You should buy travel insurance before ............ to another country.

Which sentence has the CORRECT WORD ORDER?

Whenever I travel to the United States, I............. my cousins.