Determine the proper form of the verb for the following sentence.
The students _____ the exam before the deadline.
"The students completed the exam before the deadline."
Complete the following task based on the instruction and optional input provided.### Instruction:
Determine the proper form of the verb for the following sentence.

### Input:
The students _____ the exam before the deadline.

### Output:
"The students completed the exam before the deadline."