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

581. Adjectives (876 candidates)
582. Possessive adjectives (572 candidates)
583. Present perfect (8523 candidates)
584. Expressions (432 candidates)
585. Imperfect (3290 candidates)
586. Adverbs - Ooit / nooit ? (1401 candidates)
587. Past participle (949 candidates)
588. Passive voice (2693 candidates)
589. Plural (839 candidates)
590. Comparing (1531 candidates)
591. Indefinitive adjectives and pronouns (319 candidates)
592. Prepositions (1052 candidates)
593. Subordinate clauses (325 candidates)
594. Infinitive / -(te)+ verb (1243 candidates)
595. Present (1499 candidates)
596. DIE or DAT? (1743 candidates)
597. Prepositions (265 candidates)
598. Imperfect (791 candidates)
599. Inverting words (3145 candidates)
600. Negation - geen / niet (1838 candidates)