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

581. Adjectives (881 candidates)
582. Possessive adjectives (574 candidates)
583. Present perfect (8618 candidates)
584. Expressions (432 candidates)
585. Imperfect (3301 candidates)
586. Adverbs - Ooit / nooit ? (1407 candidates)
587. Past participle (950 candidates)
588. Passive voice (2700 candidates)
589. Plural (841 candidates)
590. Comparing (1544 candidates)
591. Indefinitive adjectives and pronouns (320 candidates)
592. Prepositions (1052 candidates)
593. Subordinate clauses (326 candidates)
594. Infinitive / -(te)+ verb (1273 candidates)
595. Present (1505 candidates)
596. DIE or DAT? (1749 candidates)
597. Prepositions (265 candidates)
598. Imperfect (796 candidates)
599. Inverting words (3171 candidates)
600. Negation - geen / niet (1842 candidates)