C.C. and C.A.

1. a) She went to bed early, but it took hours for her to fall asleep.
   b) She went to bed early; however, it took hours for her to fall asleep.
   
   
2. a) She wants to lose weight, so she has gone on a strict diet.
   b) She wants to lose weight; therefore, she has gone on a strict diet.
   
   
3. a) The night air was very still, and a light rain had begun to fall.
   b) The night air was very still ;moreover, a light rain had begun to fall.
   
   
4. a) Her friend did her best to learn to cook, but nothing she prepared came out right.
   b) Her friend did her best to learn to cook ;however, nothing she prepared came out right.
   
   
5. a) Our team learned that the train would be very late, so we decided to take the plane.
   b) Our team learned that the train would be very late; therefore, we decided to take the plane.
   
   
6. a) The girl can sing very well, and she is a talented actress.
   b) The girl can sing very well; moreover, she is a talented actress.
   
   
7. a) Their basement was damaged by the flood, but they can't afford to fix it now.
   b) Their basement was damaged by the flood; however, they can't afford to fix it now.
   
   
8. a) My boss wants to live like a millionaire, so he bought an expensive mansion in an exclusive area.
   b) My boss wants to live like a millionaire; therefore, he bought an expensive mansion in an exclusive area.
   
   
9. a) Their army lost the last few battles, but they kept on fighting.
   b) Their army lost the last few batles; however, they kept on fighting.
   
   
10. a) Capital punishment is often applied unfairly, and a mistake is sometimes made.
    b) Capital punishment is often applied unfairly; moreover, a mistake is sometimes made.
    
    
11. a) The boy has been absent from class many times, so the principal called him to his office for an explanation.
    b) The boy has been absent from class many times; therefore, the principal called him to his office for an explanation.