5. He didn't arrive until 9 o'clock although he promised that he wouldn't be late.

=>In spite of……………………………………………………………..

6. Although he was seriously ill, he was determined to finish his work.

=> In spite of……………………………………………………………..

7 . Mary went to bed early because she felt tired.

=>Because of ……………………………………………………………..

9 . She didn’t go to the circus with Betty because she had a bad cold.

=>Because of ……………………………………………………………..

10. Because of driving too fast, he caused a serious accident.

=> Because ­……………………………………………………………...