If a big rock ... the Earth, it ... a huge explosion. выберите один ответ:
А. hit / would cause
В hitted/ cause
С would hit / caused​

If a big rock ... the Earth, it ... a huge explosion.

А. hit / would cause

В hitted/ cause

С would hit / caused​

выберите один ответ:

А. hit / would cause

If a big rock hit the Earth, it would cause a huge explosion.