tests by hidalgo with the online test builder (688 tests)

501. Prepositions (1484 candidates)
502. Preterite tense (Pretérito indefinido) (7716 candidates)
503. Expressions with TENER (1012 candidates)
504. Conjunctions Y(E), O (U) (3977 candidates)
505. Prepositions (1996 candidates)
506. Clothes (1311 candidates)
507. Por qué, por que, porque, porqué (1426 candidates)
508. Infinitive or "que + subjunctive" in a subordinate (2486 candidates)
509. Prepositions (1394 candidates)
510. Personal pronouns (829 candidates)
511. Gender of nouns (877 candidates)
512. Antonyms (1421 candidates)
513. Present => Past and vice versa (893 candidates)
514. Imperative mood (affirmative and negative commands) (780 candidates)
515. Infinitives (761 candidates)
516. Subjunctive imperfect (769 candidates)
517. Preterite tense (Regular verbs) (9059 candidates)
518. Synonyms (verbs) (676 candidates)
519. Where, who, when, how, why ...? (1145 candidates)
520. Subjunctive present (1154 candidates)