To solve the sentence correctly, we need to choose the word that best fits the context: "The student was very tired, yet he ______ to complete the assignment on time."
The key part of the sentence is the conjunction "yet", which indicates a contrast. This suggests that despite being very tired, the student achieved his goal of completing the assignment. Therefore, we need a word that conveys accomplishment or success in finishing the task.
Let’s analyze the options:
- failed: This implies that the student did not complete the assignment, which contradicts the use of "yet" that suggests overcoming the tiredness. This option does not fit well.
- managed: This word means succeeded or accomplished something, especially despite difficulty. It aligns perfectly with the context, indicating the student was tired but still completed the assignment.
- refused: This suggests the student chose not to do the assignment, which doesn't fit the suggestion that the task was actually accomplished.
- ignored: This implies that the student gave no attention to the assignment, which again opposes the evident completion of the task.
Considering the analysis, the best option to fill in the blank is "managed", as it indicates successful completion despite the challenge of being tired.