tests by hidalgo with the online test builder (899 tests)

581. Mucho / Muy (25318 candidates)
582. Indefinite preterit (14288 candidates)
583. False friends (1122 candidates)
584. Verbs (1725 candidates)
585. Pronouns (5934 candidates)
586. Time clauses (11655 candidates)
587. Reflexive pronouns (1065 candidates)
588. Verbs (1511 candidates)
589. Phrasal verbs (1802 candidates)
590. Adjective (7601 candidates)
591. Pronouns some/any (4562 candidates)
592. Articles (12078 candidates)
593. Personal subject pronouns (1731 candidates)
594. For/since (2970 candidates)
595. Mots se terminant en -ill(i)er, -illée .. (1496 candidates)
596. Subjunctive (10128 candidates)
597. Accent circonflexe ou pas ? (18844 candidates)
598. Ever/already/before/yet (35710 candidates)
599. Infinitive or -ing (10000 candidates)
600. Articles (2722 candidates)