Выберите правильный вариант. 1. probably, (that’s why/due to) its geographical position and landscapes, australia’s population is very small. 2. (thanks to/so) the fact that anna has a beautiful voice, the concert was a great success. 3. i heard a noise (so/because) i got out of bed and turned the light on. 4. i do it well (because/that’s why) i trained a lot.