IV. Complete the sentences using the comparative form of the adjectives

1) This jacket is too small. I need a larger size. (a)
2) Bob is taller than his brother. (b)
3) Helen is only five years younger than I am. (c)
4) Tom is the best pupil in our class. (a)
5) I think horses are the most beautiful animals. (b)
6) This book is more interesting than that one. (a)