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

641. Adjectives (895 candidates)
642. Diminutive words (672 candidates)
643. Plural (1000 candidates)
644. Sentences (307 candidates)
645. Subordinate clauses (652 candidates)
646. Past participle (9276 candidates)
647. Pronominal verbs (918 candidates)
648. Demonstrative adjectives (773 candidates)
649. Ergens / nergens (417 candidates)
650. Indefinite adjectives and pronouns (161 candidates)
651. Ooit / nooit (639 candidates)
652. Numbers (1011 candidates)
653. Possessive adjectives (425 candidates)
654. Adjectives - comparisons (1054 candidates)
655. Dative - ter / ten (117 candidates)
656. Inverting words (996 candidates)
657. Plural (1049 candidates)
658. Prepositions (159 candidates)
659. Imperfect - irregular verbs (1057 candidates)
660. Imperfect (721 candidates)