The key answer of exercise Writing & Speaking

I was very shocked and quite nervous when I heard the explosion. I thought a meteor had hit the spacecraft. It turned out to be a short circuit which had caused an oxygen tank to explode. We had to act quickly and come up with a solution to survive because we were running out of oxygen and power. We decided to move into the lunar module which had its own oxygen, water and power supply. We knew we could survive in there and return to Earth. We just had to reduce the carbon dioxide levels because there were three of us and the module was only designed for two. We managed that and we made it back to Earth safely. We were very relieved.