tests by mariebru with the online test builder (1938 tests)

581. Adjectives (889 candidates)
582. Possessive adjectives (579 candidates)
583. Present perfect (9049 candidates)
584. Expressions (447 candidates)
585. Imperfect (3383 candidates)
586. Adverbs - Ooit / nooit ? (1453 candidates)
587. Past participle (974 candidates)
588. Passive voice (2776 candidates)
589. Plural (855 candidates)
590. Comparing (1581 candidates)
591. Indefinitive adjectives and pronouns (323 candidates)
592. Prepositions (1078 candidates)
593. Subordinate clauses (331 candidates)
594. Infinitive / -(te)+ verb (1296 candidates)
595. Present (1552 candidates)
596. DIE or DAT? (1814 candidates)
597. Prepositions (266 candidates)
598. Imperfect (822 candidates)
599. Inverting words (3295 candidates)
600. Negation - geen / niet (1863 candidates)