Rewrite the sentences to make the same meaning with previous one

Rewrite the sentences to make the same meaning with previous one.
46. The question is so difficult that all the students can’t answer it.
 It is such.....
47. The film was so boring that I fell asleep.
 Because .....
48. Although the weather was bad, it did not delay the traffic.
 In spite of .......
49. You feel unhealthy because you don’t take any exercise.