Here are the matches for the sentences:

1. Stephen opened the door, put **g. down, and said hello to his parents.**
2. The experienced airforce pilot put **j. in to investigate that serious and complicated matter.**
3. Natalia and Vivian are getting **f. in new customers if they want to survive the depression.**
4. Penelope's parents will be waiting for her when she gets **h. on much better now after a heart-to-heart talk.**
5. The paramilitary police were brought **c. by the national assembly.**
6. Mr. Jones's meeting with the senior managers has been put **b. on the aircraft.**
7. That fine dining restaurant needs to bring **e. down in his work schedule.**
8. Passengers are required to show their boarding pass before getting **d. off the train at 3 o’clock tomorrow afternoon.**
9. They are living in an old farmhouse which was put **a. up in the woods thirty years ago.**
10. The new law against smoking in public places has been brought **i. down safely on the flight deck of the aircraft carrier.**

Feel free to ask if you have more questions!