Specify the verb, which will agree with its subject in each sentence:
The Maranao, together with the Illanun and Maguindanao ____ 1. (is, are) an indigenous Muslim group in Mindanao in southwestern Philippines. Their culture and identity ____ 2. (reflects, reflect) general features of Southeast Asian tribes. Each of these, however, ____ 3. (has, have) developed unique traditions.