Найдите предложение с ошибкой. a) This article is easier than that one. b) This is the smallest room in our flat. c) He is the most old in the family. d) Tom is the best student in the group.

a) This article is easier than that one. (Эта статья проще, чем та.) - верно.

b) This is the smallest room in our flat (Это самая маленькая комната в нашей квартире). - верно.

c) He is the most old in the family. - неверно. Правильный вариант: He is the oldest in the family. (Он самый старший/старый в семье.)

d) Tom is the best student in the group. (Том - лучший учащийся в группе.) - верно.