(a) trod – walked, stepped, strode, went
(b) fluttered – hovered, danced, flitted, flapped, oscillated, twitched, vibrated, flickered
(c) hurried – went fast, hastened, sped, charged, sprinted, chased, scampered, galloped, scrambled.
(d) skipped – capered, bobbed, bounded, jumped, leapt, gambolled, ’frisked, romped
(e) strode – marched, trod, paced, stalked, dashed, ran, flaunted, joggled, tramped, rushed,zoomed
(f) sped – hurried, rushed, zipped, spurred, hurtled, sailed, hastened, quickened