--- What are you reading there, Susan? --- Nothing interesting. I am just ________ the pages to kill time.
34.The old saying that you should live each day_________it was your last is a nice view.
33.The information________in the documents proved that my husband had been out of town in his car that day.
32.Many experiments_____before the research team was able to get the exact data to carry on project.
31.Either you or on of your students________to attend the meeting that is due tomorrow.
30.When he came back, he found the bag he had________over the seat was gone.