I believe your answer would be D. the subject-verb agreement states that if the subject is singular, then the verb must be singular and if the subject is plural than the verb must be plural.
Answer:
I’m not fully sure but in my opinion i would think, “You can not learn in the future unless you learn from your mistakes.” I hope this helps, Sorry if it is wrong.
Best of luck!!<3
Stealing may not be ethical under normal circumstances.
Answer:
I'm going to clean the whole house before the guests come tomorrow.
Explanation: