.Soldiers stood next to a police truck, looking at the crime scene _______ a woman was gunned down in a poor neighborhood of the border city of Iran October 18, 2009.
No one responded when Tom was speaking, so he paused _______ before continuing to draw our attention.
Coming into the room, I found them _______ at the table, ________ chess.
______ an important role in a new movie, Andy has got a chance to become famous.
---I’m sorry to have _________ much of your spare time. ---That’s OK, and I am glad to help you.
Not until Mr. Smith came to China ___ what kind of a country she is.