tests by hidalgo with the online test builder (959 tests)

501. DES- / IN- (4382 candidates)
502. Animals (13671 candidates)
503. Vocabulary : At school (21163 candidates)
504. Enclise (l') (39903 candidates)
505. Likes (1834 candidates)
506. Pretérito indefinido / Pretérito imperfecto (21040 candidates)
507. Haber/tener (present) (3866 candidates)
508. Pretérito indefinido: irregular verbs (8385 candidates)
509. Plural (4223 candidates)
510. Tanto (8915 candidates)
511. From another tense to present tense (1800 candidates)
512. Gérondif ou participe passé (10110 candidates)
513. #el que#lo que (4897 candidates)
514. Diminutive words (4363 candidates)
515. Simple past - irregular verbs (71083 candidates)
516. Personal pronouns (1330 candidates)
517. Muy/Mucho (29465 candidates)
518. Pretérito indefinido / Conditional present (5317 candidates)
519. Synonyms (verbs) (12485 candidates)
520. Esta - está - ésta (20402 candidates)