Answer:
1.a heap of rubbish
2.a hedge of bushes
3.a library of books
4.an outfit of clothes
5.an orchard of fruit trees
6.a pack of cards
7.a packet of letters
8.a pair of shoes
9.a quiver of arrows
10.a range of mountains
11.a ream of paper
12.a reel of film
13.a set of clubs
14.a sheaf of grain
15.a book of notes
16.a bouquet of flowers
17.a bowl of rice
18.a bunch of keys
19.a bundle of sticks
20.a catalogue of prices
21.a chest of drawers
22.a cluster of coconuts