[填空题] Why was the writer so sure that he had brought his wallet with himBecause

[填空题] Why was the writer so sure that he had brought his wallet with himBecause he ______.

细节题。根据文中Then I remembered taking it out to pay for the taxi得知作者记得付了出租车费的。所以，他肯定带了钱包。故应填had taken it out to pay the taxi-driver。