1. At first Mr. Smith thought his investment in information technology was a waste of money, but finally it .
2. Being out of work and having two young children, the couple found it impossible to .
3. She left me without any explanation. I still don't know why she did it.
4. She bent down and a leaf from the ground, and pressed it between the pages of the book.
5. The party was a great success, the fine weather and a lot of hard work.