This one: "Lee noticed a problem and alerts a teacher".
The second verb should not have been changed to present tense.
You should change the verb alert to past tense: "Lee noticed a problem and alerted a teacher".
Torvald Helmer would love his wife Nora as an equal
Answer:
Dear Teacher(her/his name)
Explanation:
Your have always helped me when I needed it.
Whenever I had questions you had answers.
Whenever I had doubts you gave reassurance.
I think your a awesome teacher and hope you have fun teaching.