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obstacle of reading
Yes. It is the name of a thing.It can be made plural obstaclesIt accepts articles the obstacle, an obstacle.
her largest obstacle
Obstacle is correct.
that test was as difficult as n obstacle
No, it is an article (indefinite article), which is a form of "determiner" that determines if a noun is a specific example or any one of the examples. "An" obstacle = any obstacle "The" obstacle = a certain obstacle
That obstacle is in my way!
Verrazannos biggest obstacle is
Octavian was Cleopatra's biggest obstacle.
every body had to face an obstacle in there life
The Tagalog word for "obstacle" is "hadlang".
When a body hits an obstacle the force with which it hits the obstacle depends upon---the velocity at the installation of collision bt not on initial velocity.