tests by hidalgo with the online test builder (933 tests)

481. Pretérito indefinido / Pretérito imperfecto (20566 candidates)
482. Haber/tener (present) (3846 candidates)
483. Pretérito indefinido: irregular verbs (8320 candidates)
484. Plural (4206 candidates)
485. Tanto (8859 candidates)
486. From another tense to present tense (1796 candidates)
487. Gérondif ou participe passé (9962 candidates)
488. #el que#lo que (4858 candidates)
489. Diminutive words (4322 candidates)
490. Simple past - irregular verbs (69906 candidates)
491. Personal pronouns (1319 candidates)
492. Muy/Mucho (28924 candidates)
493. Pretérito indefinido / Conditional present (5290 candidates)
494. Synonyms (verbs) (12465 candidates)
495. Esta - está - ésta (19913 candidates)
496. Enclisis (9856 candidates)
497. Present - Irregular verbs (2636 candidates)
498. Present - Regular verbs (8573 candidates)
499. Possessive adjectives (11658 candidates)
500. Imperative no (39065 candidates)