1.
Sequence of tenses (105 candidates) 
2.
Present => Preterite (Presente => Pretérito indefinido) (108 candidates) 

3.
Très, beaucoup (muy/mucho) (144 candidates) 
4.
Numbers (242 candidates)
5.
Imperative (83 candidates) 
6.
Gerund (114 candidates) 
7.
Present tense (324 candidates)
8.
Past participles (irregular) (200 candidates)
9.
Ser or Estar and right tense (295 candidates) 
10.
Por or Para (305 candidates) 
11.
Gender of nouns (330 candidates)
12.
Present perfect (408 candidates) 
13.
Diacritical accent (128 candidates) 
14.
Paronyms (101 candidates) 
15.
Prepositions (364 candidates)
16.
Present tense (irregular verbs) (474 candidates)
17.
Ser o Estar (263 candidates) 
18.
Past simple (irregular verbs) (813 candidates)
19.
Pronouns (54 candidates)
[Being reviewed]20.
Prepositions (607 candidates) 
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