OE
The word “though” indicates that the negotiation did not actually proceed smoothly. The first blank comes after “semblance of,” which indicates an outward appearance, especially one different from the reality. The word “disingenuous” backs up that meaning. You need something positive—the parties are showing false “amity,” or friendliness, out of “a superficial adherence to” (pretense of following) customs or rules—“mores.” The other choices for the first blank, “duplicity” (deliberate deceptiveness) and “solace” (comfort or consolation in sorrow) don’t fit logically with “disingenuous.” Similarly, “truisms” (self-evident claims) and “plaudits” (expressions of praise) would create a nonsensical meaning in the second blank.
Answer: B,D