9. This is such an interesting storybook that we have read it three times. (so)
→ This storybook ... is so interesting that we have read it three times.
10. Khoa is not old enough to join the army. (too)
→ Khoa is .... too young to join the army
11. Although Nam is not an intelligent student, he can learn very fast.
→ In spite of the fact that Nam is not an intelligent student, he can learn very fast.
12. Because Hoa was rich, she could buy that house.
→ Because of Hoa's wealthiness, she could buy that house.
13. Because the rain was so heavy, I couldn't go to school.
→ Because of the heavy rain, I couldn't go to school.
14. His father asked him to go stay at home because he was sick.
→ Because of his illness, His father asked him to go stay at home
15. Because there was an accident, I was late.
→ Because of an accident, I was late.
16. He went fishing in spite of our warnings. (Although)
-> ALthough we had warned him He went fishing
17. It backfired on me despite my good intentions. (Though)
Though I had goog intentions, it backfired on me