Sadly, ____ I remember was a beautiful lake two years ago is now a smelly wasteland.
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.
29.What has been studied suggest that a short nap in the afternoon_______you refreshed for the next four or five hours.