Answer :
While we studied, it rained
To convert the sentence, " While we were studying,it was raining into the simple past tense, you need to change the verb tense of both verbs in the sentence.
First, change "were studying" to the simple past tense. The simple past tense of "study" is "studied."
Next, change " was raining" to the simple past tense. The simple past tense of "was raining is ' rained'.
Lastly, put it all into a sentence. The sentence " we were studying,it was raining" in simple past tense becomes " While we studied it rained."
