Look at the example below.
An apple / a lemon (sweet)
An apple is sweeter than a lemon.

A lion / a cat (long tail)
A lion has got a longer tail than a cat.
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1) A plane / a train (fast)
A plane a train.

2) A car / a bike (expensive)
A car a bike.

3) An elephant / a rhino (heavy)
An elephant a rhino.

4) You / me (old)
You me.

5) I / you (young)
I you.

6) She / her friend (short hair)
She her friend.

7) A tiger / a deer (dangerous)
A tiger a deer.

8) Today / yesterday (good)
Today yesterday.

9) They / me (bad)
They me.

10) The girl / the boy (sad)
The girl the boy.

11) The sun / the moon (far)
The sun the moon.

12) English / german (difficult)
English german.

13) Winters / summer (cold)
Winters summers.

14) Summers / winters (hot)
Summers winters.

15) Springs / autumns (warm)
Springs autumns.

16) Green salads / hamburgers (healthy)
Green salads hamburgers.

17) Your dog / mine (short fur)
Your dog mine.

18) My dad / my mum (tall)
My dad my mum.

19) Films / books (boring)
Films books.

20) Crocodiles / snakes (big teeth)
Crocodiles snakes.