In this task, you will be shown a correct English sentence. You need to generate an incorrect form of the input sentence.
One example: Students shouldn't work multiple full-time jobs.
Solution is here: Student's shouldn't work many full-time jobs.
Explanation: The possessive form is not correct in this instance and many should be multiple.

Now, solve this: When you understand the concepts and ideas , it is up to you to prove them , to see if they are really what you have been told , and I think this is the main reason why students prefer facts rather than just understanding ideas and concepts .
Solution:
When you understand the concepts and ideas is up to you to prove them , to see if they are really what you have been told , i think this is the main reason why students prefere facts rather than just understanding ideas and concepts .