AFTER YOU _________ MY LETTERS, YOU __________ ME IN THE PAST.B....

138. After you _________ my letters, you __________ me in the past.b. If the director went on business, I would be waiting for him to ask something.a. received / didn’t reply b. received / hadn’t repliedc. If the director didn’t go on business, I wouldn’t be waiting for him to ask c. had received / didn’t reply d. had received / hadn’t repliedsomething.