Ответ:

Thomas: Hi, Stella. 1 this is Frankie. 2 He’s my cousin.

Stella: 3 Hi, Frankie. Nice 4 to meet you.

Frankie: 5 Nice to meet you too, Stella.

Ответ: 1 — this is; 2 — He’s; 3 — Hi; 4 — to meet you; 5 — Nice.