—It seems that you know Dr. John very well. —Of course, we ________ together for five years in the 1990s.
Our teacher told us to ___________ the work ____________ we did just now.
Sally was ____________ to see her friend off at the airport.
As far as I’m concerned, education is about learning and the more you learn, ___________________.
Allen and I are in the same history class, but her assignment differs _____________ mine.
We must __________ that the experiment is controlled as rigidly as possible.