Question

To make certain the trick of the trojan horse works, the greeks leave _______________ behind as a spy to persuade the trojans that the greeks had really sailed home.

Answer 1

Sinon
He was the Greek spy who was left behind to convince the Trojans that the Greeks had surrendered. He convinced the Trojans to take the horse into their city despite opposition from some elites of the city who claimed they were suspicious of it.