22. Whose dictionary is this?It is A)My
B) Mine
C) Their
23. ... bicycle is clean,.. is dirty.
A)Your,her
B)Mine,hers
C)My,hers

22. B (Whose dictionary is this? It is mine)
23. С (My bicycle is clean, hers is dirty)

22. Whose dictionary is this? — It is mine. (B)  Чей это словарь? — Мой.

23. My bicycle is clean, hers is dirty. (C)  Мой велосипед чистый, её — грязный.