From Activity 2, Tina says, 'Well, _____'s a new film, Amar Bondhu Rashed, at the cinema.' This indicates existence, so 'There's' is correct.
Class 6 › English Grammar and Composition › Chapter 7: Introductory 'There' & 'It' › Topic: Understanding the use of 'there' for existence, events, and quantities
Aligned to the NCTB national curriculum.