Question

I have no idea where I left my trainers. Oh, I guess I ____ left them at the gym. * А must have В could be С have to D should be

Answer 1

Ответ: I have no idea where I left my trainers. Oh, I guess I have to left them at the gym.

Объяснение: maybe the reader was wrong

Answer 2

The correct answer is: A must have left them at the gym.

So the complete sentence would be: "I have no idea where I left my trainers. Oh, I guess I must have left them at the gym."