請問英文選擇題答案，謝謝?

6.After succeeding _____ assassinating the reigning monarch, the general succeeded _____ the throne.
(A) all/in (B) in/for (C) on/at (D) in/to

7.Finding that the joke was told _____ his expense, the good-natured Joe sighed, "Guess the joke is _____ me again!"
(A) at/on (B) for/ at (C) about/ for (D) in/ about
16.The new device is easy to handle as long as you follow the instructions _____.
(A) to a fault (B) to the letter (C) into the bargain (D) beside the point

17._____ by the honest appearance of the salesman, the old lady bought a counterfeit gold coin.
(A) Perceived (B) Received (C) Conceived (D) Deceived

18.If history is any _____ every conquest of the tenacious city is bound to be temporary.
(A) implication (B) complication (C) indication (D) identification