Rewrite the following sentence without changing the meaning. Use the given word(s) if any

Rewrite the following sentence without changing the meaning. Use the given word (s) if any .
1. We started organising many similar events to raise people's awareness of the dangers of pollution two years ago.
=> We have
2. Her Mom didn't let her go on the excursion
=> Her Mom didn't allow
3. Other ocean in the world aren't as large as the Pacific one
=> The Pacific Ocean is
4. He turned off the light, then he went out
=> Before
5. I couldn't complete my project yesterday. My laptop crashed.
=> Because