tests by hidalgo with the online test builder (948 tests)

501. Gérondif ou participe passé (10018 candidates)
502. #el que#lo que (4885 candidates)
503. Diminutive words (4328 candidates)
504. Simple past - irregular verbs (70303 candidates)
505. Personal pronouns (1319 candidates)
506. Muy/Mucho (29217 candidates)
507. Pretérito indefinido / Conditional present (5304 candidates)
508. Synonyms (verbs) (12476 candidates)
509. Esta - está - ésta (20197 candidates)
510. Enclisis (9876 candidates)
511. Present - Irregular verbs (2640 candidates)
512. Present - Regular verbs (8643 candidates)
513. Possessive adjectives (11693 candidates)
514. Imperative no (39252 candidates)
515. Possessive adjectives (18969 candidates)
516. Missing words (1296 candidates)
517. Personal pronouns (6726 candidates)
518. Articles (16347 candidates)
519. Missing words (1155 candidates)
520. Tenses (6858 candidates)