Ranked by: number of candidates
1.
Determiners (152954 candidates) 
2.
Adverbs (25786 candidates) 
3.
The four seasons (21498 candidates)
4.
Food (12661 candidates) 
5.
London (10581 candidates) 
6.
Superlative (5842 candidates) 
7.
Temper (5667 candidates) 

8.
Past tense/Charlie Chaplin (4895 candidates)
9.
Lion (3092 candidates)
10.
Complete the text (2765 candidates) 
11.
Olympic Games (2534 candidates)
12.
Dolphins (2220 candidates)
13.
Good answer with adjective (1720 candidates) 
14.
Football (1578 candidates) 
15.
Ecuador (1420 candidates) 
16.
Proverbs (1294 candidates)
17.
Proverbs (1126 candidates) 

18.
Quantities (830 candidates) 
19.
Sentences (605 candidates)

