Choose the correct option to complete third conditional sentences.

1. If children [tell|told|had told] teachers about their problem, they [have|would|would have helped] them.
2. If our team [win|won|had won] that match, they [would have become|became|become] the world champions.
3. Megan [would|will|would have gone] to the University if she [passed|had passed|pass] her exams.
4. If Tom [would have|had had|had] more time, he [started|would start|might have started] learning IT technologies.
5. What [would|did|would you have done] if you [could have changed|changed|would changed] your past?
6. If Jamie [hadn't been|wasn't|weren't] an artist, he [become|would become|would have become] a designer.