用现在分词合并下列句子，使其成为简单句
He focused all his attention to English; as a result,he improved it much.
                                                                   
When she knew that she was wrong, she apologized to me immediately.
                                                                   
Because he lives far away from school, he is often late.
                                                                   
The sun shines brightly in the sky and provides us with light and heat.
                                                                   
The young girl who is collecting the sheets of paper is a secretary in the office.
                                                                   
When we had got to know the result,we found that  we were smiling to each other.
                                                                   
The film which is interesting is one which is worth seeing a second time.
                                                                   
If you think twice,you will feel that you are doing a thing which is challenging.