PPSC Solved Past Papers MCQs, English MCQs, PPSC ZILADAR(Research/DLR Zone)(14-20G2020) Irrigation DepartmentFill in the blank: “you must stick_____ your promise”.?A. In B. On C. By D. To Under an Amendment of the 1973 constitution, in which year was the name of NWFP changed to Kyber Pakhtukhwa?Khanpur Dam is built on which river?