C
1 - Mum and Dad are going to take flowers to Sasha's grandmother.
2 - Sasha is going to take the dog.
3 - Yes, they are.
D
1 - Yes, I have.
2 - My grandmother's birthday is on 26th of July.
3 - Yes, I am.
C - не могу ответить, т.к. нет текста, на который надо опираться, отвечая на вопросы