Most doctors claim to enjoy training and want to do it well, but various obstacles to good teaching exist in our present system.

The only possible obstacle to the great change did not exist.

"In sports, obstacles exist to be overcome, and there's always a better tomorrow," Brooks said.

While many obstacles still exist there, it is Susan's sincere hope that the future holds peace.

Moreover, serious obstacles exist now that were not present in 1996.

While some non-legal obstacles exist, Canada is one of only a few nations with no legal restrictions on abortion.

To one degree or another, these obstacles also exist in other parts of the world, yet American oil executives are more relaxed about them.

This is known as claimed self-handicapping, in which the individual merely states that an obstacle to performance exists.

Other obstacles also exist to a strategic weapons accord.

The Commission rightly notes that there has been progress, but obstacles and shortcomings still exist.