I would appreciate _____ it a secret.
__________ in the chimney for five hours, the thief looked very pale and tired.
Victor apologized for __________ to inform me of the change in the plan.
__________ many times, he finally understood it.
I still remember __________ to the Fa-men Temple and what I saw there.
__________ not to gamble during the World Cup, those crazy people had to give up.