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

641. Adjectives (877 candidates)
642. Diminutive words (652 candidates)
643. Plural (992 candidates)
644. Sentences (302 candidates)
645. Subordinate clauses (651 candidates)
646. Past participle (8954 candidates)
647. Pronominal verbs (903 candidates)
648. Demonstrative adjectives (760 candidates)
649. Ergens / nergens (405 candidates)
650. Indefinite adjectives and pronouns (161 candidates)
651. Ooit / nooit (625 candidates)
652. Numbers (1000 candidates)
653. Possessive adjectives (416 candidates)
654. Adjectives - comparisons (1028 candidates)
655. Dative - ter / ten (115 candidates)
656. Inverting words (962 candidates)
657. Plural (1034 candidates)
658. Prepositions (159 candidates)
659. Imperfect - irregular verbs (1031 candidates)
660. Imperfect (706 candidates)