Put the adjectives in brackets into the comparative/superlative. 1 arseny is (tall) than nika. 2 she's (heavy) than me. 3 viktor's (short) of all. 4 maths is (difficult) subject of all. 5 vlad's (old) of all.

1 Arseny is taller than Nika.
2 She's heavier than me.
3 Viktor's the shortest of all.
4 Maths is the most difficult subject of all.
5 Vlad's the oldest of all.