Answer:
Warren has played badminton since primary school.
Step-by-step explanation:
There is a keyword to the sentence, "since". When there is "since" in the sentence, keep in mind that the sentence has to be in Present Perfect form which has structure of Subject + has/have + past participle + other stuff.
In interrogative (question) form, swap the verb to have and subject then add question mark.
In negative form, add "not" after verb to have.
In the sentence, if you see the following keywords below, keep in mind that it is in Present Perfect Tense:
- since (e.g since I was a kid)
- for (e.g for 3 hours)
Please let me know if you have any queries regarding my answer in comment!