tests by hidalgo with the online test builder (958 tests)

501. DES- / IN- (4382 candidates)
502. Animals (13675 candidates)
503. Vocabulary : At school (21174 candidates)
504. Enclise (l') (39916 candidates)
505. Likes (1835 candidates)
506. Pretérito indefinido / Pretérito imperfecto (21048 candidates)
507. Haber/tener (present) (3866 candidates)
508. Pretérito indefinido: irregular verbs (8386 candidates)
509. Plural (4223 candidates)
510. Tanto (8916 candidates)
511. From another tense to present tense (1800 candidates)
512. Gérondif ou participe passé (10110 candidates)
513. #el que#lo que (4898 candidates)
514. Diminutive words (4364 candidates)
515. Simple past - irregular verbs (71110 candidates)
516. Personal pronouns (1330 candidates)
517. Muy/Mucho (29470 candidates)
518. Pretérito indefinido / Conditional present (5317 candidates)
519. Synonyms (verbs) (12485 candidates)
520. Esta - está - ésta (20408 candidates)