17. __ I saw the bus at the bus stop ahead, I started to run as fast as I could in order to catch it. A) While B) During C) The moment D) So that E) Therefore 18. We had better start saving money as soon as possible, - we are planning to buy a house __ we have children. A) because/ ever since B) until/ that C) whether/nor D) for/before E) that's why/when 19. Nearly a quarter of the species unique to the Himalayas could vanish by 2100 __ massive losses to the mountains' forests. A) in that B) afterwards C) because of D) as a result E) on the grounds that 20. __ the Müzekart , launched in Turkey in July 2008, entrance to more than 300 museums and ancient sites is cheaper than before. A) Inasmuch as B) Thanks to C) Accordingly D) Seeing that E) As soon as

17. D) So that<br />Explanation: The correct answer is "so that" because it indicates the purpose or intention of the action. In this case, the speaker started to run as fast as they could in order to catch the bus.<br /><br />18. D) for/before<br />Explanation: The correct answer is "for/before" because it indicates the reason or purpose for starting to save money. The speaker wants to buy a house before they have children, so they need to start saving money as soon as possible.<br /><br />19. C) because of<br />Explanation: The correct answer is "because of" because it indicates the cause or reason for the potential loss of species in the Himalayas. The massive losses to the mountains' forests are the reason why nearly a quarter of the species unique to the Himalayas could vanish by 2100.<br /><br />20. B) Thanks to<br />Explanation: The correct answer is "Thanks to" because it indicates the reason or cause for the cheaper entrance fees to museums and ancient sites in Turkey. The Müzekart launched in Turkey in July 2008 is the reason why entrance to more than 300 museums and ancient sites is cheaper than before.