Use the right form of Participle
1. She entered the room (to smile). 2. (To drink) coffee she was talking to her friend. 3. The letter (to write) by him was very long. 4. He didn’t see the things (to keep) in her box. 5. I don’t like the video (to buy) yesterday. 6. (To find) the keys, we were able to open the door. 7. The article on agriculture (to publish) in this magazine was written by Smith. 8. You can get the book (to recommend) by our teacher in the library. 9. While (to learn) the pronunciation of the words we learned their meaning.