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

481. Haber/tener (present) (3826 candidates)
482. Pretérito indefinido: irregular verbs (8292 candidates)
483. Plural (4201 candidates)
484. Tanto (8814 candidates)
485. From another tense to present tense (1792 candidates)
486. Gérondif ou participe passé (9888 candidates)
487. #el que#lo que (4849 candidates)
488. Diminutive words (4310 candidates)
489. Simple past - irregular verbs (69758 candidates)
490. Personal pronouns (1315 candidates)
491. Muy/Mucho (28789 candidates)
492. Pretérito indefinido / Conditional present (5260 candidates)
493. Synonyms (verbs) (12456 candidates)
494. Esta - está - ésta (19642 candidates)
495. Enclisis (9839 candidates)
496. Present - Irregular verbs (2632 candidates)
497. Present - Regular verbs (8567 candidates)
498. Possessive adjectives (11630 candidates)
499. Imperative no (38950 candidates)
500. Possessive adjectives (18913 candidates)