tests by hidalgo with the online test builder (899 tests)

481. Haber/tener (present) (3833 candidates)
482. Pretérito indefinido: irregular verbs (8313 candidates)
483. Plural (4201 candidates)
484. Tanto (8840 candidates)
485. From another tense to present tense (1796 candidates)
486. Gérondif ou participe passé (9954 candidates)
487. #el que#lo que (4856 candidates)
488. Diminutive words (4322 candidates)
489. Simple past - irregular verbs (69885 candidates)
490. Personal pronouns (1316 candidates)
491. Muy/Mucho (28899 candidates)
492. Pretérito indefinido / Conditional present (5288 candidates)
493. Synonyms (verbs) (12461 candidates)
494. Esta - está - ésta (19863 candidates)
495. Enclisis (9851 candidates)
496. Present - Irregular verbs (2635 candidates)
497. Present - Regular verbs (8569 candidates)
498. Possessive adjectives (11653 candidates)
499. Imperative no (39058 candidates)
500. Possessive adjectives (18933 candidates)