1.I didn't wake up until I heard the alarm.
2.It is because you were doing your homework that I didn't tell you about this.
3.Although he is serious,but I find it not difficult to get along with him.
4.Do not blame him any more.He didn't hurt you on purpose.
5.It's the first time that I attend such an important meeting.
6.There was a time when I loved writing so much that I dreamed of becoming a writer.
7.I just want to tell you that I could never have finished this book without your help.
8.Do not tell me how dilligent you are.Just tell me what you've got done.
9.He did want to make friends with you.
10.While walking his dog,he happened to meet his favourite singer.