tests by hidalgo with the online test builder (972 tests)

521. Haber/tener (present) (3872 candidates)
522. Pretérito indefinido: irregular verbs (8404 candidates)
523. Plural (4223 candidates)
524. Tanto (8924 candidates)
525. From another tense to present tense (1803 candidates)
526. Gérondif ou participe passé (10228 candidates)
527. #el que#lo que (4905 candidates)
528. Diminutive words (4370 candidates)
529. Simple past - irregular verbs (71520 candidates)
530. Personal pronouns (1330 candidates)
531. Muy/Mucho (29569 candidates)
532. Pretérito indefinido / Conditional present (5323 candidates)
533. Synonyms (verbs) (12490 candidates)
534. Esta - está - ésta (20472 candidates)
535. Enclisis (9955 candidates)
536. Present - Irregular verbs (2643 candidates)
537. Present - Regular verbs (8696 candidates)
538. Possessive adjectives (11753 candidates)
539. Imperative no (40007 candidates)
540. Possessive adjectives (19002 candidates)