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Therefore, in addition to allowing users to select sentences to be presented to them based on their progress in a textbook, another desirable ability would be to have teachers be able to augment the sentences presented to their users with custom sentences (in addition to those that are associated with the textbook).
Task: Teacher adds sample sentences for her course
Subtasks
Locate sample sentences that utilize the idioms and vocabulary taught in the curriculum.
Inform students about newly available supplementary sentences once they are covered in class.
