Answer:
'The mercenaries fought for as long as they were paid, not just the 40 days a year that knights fought.'
Explanation:
This supports the statement that hired soldiers would fight for longer than knights would. They had motivation which was currency in exchange for their participation in battle/war. The knights on the other hand were only required a certain amount of days. It was not stated whether they were paid or not, but I can assume that they were not which would make one--specifically--a knight reluctant to go to battle. Therefore, hired soldiers did the work the knights were reluctant to do.
The correct answer should be male, serve, assembly
These are the keywords that construct the meaning. Things like each or local are used to further describe the keywords. For example, you could remove local from the sentence without affecting the meaning of it, but you couldn't remove assembly because the meaning would change.<span />
FiRst person .... I believe
The type of verbal is participle and the verbal phrase is “playing the piano”