Помогите по английскому, что нужно вставить за месте пропуска?
1)He and she _ miss classes.
a. Don't
b. Doesn"t
c. Isn"t

2)The Volgs is _ long river.
a. A
b. The
c. -

3)Bob is the _ students of the group.
a. Good
b. Better
c. Best

4)Mary always gets _ flowers on her birthday.
a. The
b. Some

5)_ your sister prepare for the lessons in the library?
a. Is
b.Are
c.Does

6)Do you look _ your little sister?
a. Like
b.Ready
c. On