After entering senior high school, we've reached a point in our studies __________ we needed to decide how to arrange our time-table efficiently.
You ____ him so closely; you should have kept your distance.
In fact Peter would rather have left for San Francisco than ____ in New York..
Professor Wang , _______ for his informative lectures, was warmly received by his students.
________evidence that language acquiring ability must be stimulated.
The professor could hardly find sufficient grounds _____his arguments in favor of the new theory.