(literary) they

now advancing and now retreating; ebb and flow; seesawing; taking alternately favorable and unfavorable turns

Same as above.

(archaic) to continue / (archaic) to occur immediately or instantly / (archaic) to chronicle / (archaic) to connect

to continue / to happen consecutively, continue in a row / to lead to / to succeed, follow after

sequel; continuation

negotiations

negotiate

the state or condition (of something at a certain time)

raining for days on end