Ответ:

Буквосочетание ar читается как звук \( [ɑː] \), а буквосочетание or — как звук \( [ɔː] \).

a: farm: armchair, car, art, park, artist.

b: sport: for, shorts, morning.

Чтение: armchair — [ˈɑːmtʃeə], car — [kɑː], art — [ɑːt], park — [pɑːk], artist — [ˈɑːtɪst]; for — [fɔː], shorts — [ʃɔːts], morning — [ˈmɔːnɪŋ].

Ответ: a — armchair, car, art, park, artist; b — for, shorts, morning.