tests by hidalgo with the online test builder (914 tests)

501. Tanto (8890 candidates)
502. From another tense to present tense (1800 candidates)
503. Gérondif ou participe passé (10039 candidates)
504. #el que#lo que (4888 candidates)
505. Diminutive words (4337 candidates)
506. Simple past - irregular verbs (70447 candidates)
507. Personal pronouns (1319 candidates)
508. Muy/Mucho (29253 candidates)
509. Pretérito indefinido / Conditional present (5307 candidates)
510. Synonyms (verbs) (12481 candidates)
511. Esta - está - ésta (20277 candidates)
512. Enclisis (9888 candidates)
513. Present - Irregular verbs (2641 candidates)
514. Present - Regular verbs (8673 candidates)
515. Possessive adjectives (11703 candidates)
516. Imperative no (39303 candidates)
517. Possessive adjectives (18977 candidates)
518. Missing words (1296 candidates)
519. Personal pronouns (6738 candidates)
520. Articles (16350 candidates)