1. The government should invest more in education it is essential for the country's development.

because / despite / although / and

2. the rapid advancement of technology, many people still prefer traditional methods.

In spite of / Because / Although / As a result of

3. It is crucial people are aware of environmental issues.

that / so that / although / in order to

4. The report, was published last week, highlights the need for policy changes.

that / which / whom / whose

5. If the economy to improve, unemployment rates would decrease.

improves / improved / had improved / will improve

6. Many people believe that exercise is beneficial it helps maintain a healthy lifestyle.

since / despite / although / or

7. She continued to work hard facing numerous challenges.

because / due to / although / despite

8. The project was successful the team collaborated effectively.

since / because of / although / despite

9. He is so talented he can play multiple musical instruments.

because / since / that / so

10. he was very tired, he finished his work before going to bed.

 Because / Although / In spite of / Therefore

11. The town we spent our holidays is famous for its beautiful scenery.

 that / where / when / what

12. It is important students practice writing essays regularly.

 that / so / in order / although

13. The company faced financial difficulties poor management decisions.

 because of / although / due / despite

14. Not only talented, but she also works extremely hard.

 she is / is she / she / is

15. They decided to take a break they had been working for several hours.

 because / although / so / but