[ Past Participle ]
Know knew ……
A. Knowing
B. Knewn
C. Knowed
D. Known

Random Topics:
would should couldComparative AdjectivePossessive Pronouns and Adjective PronounsRelative ClauseFamily Vocabulary and GrammarParticiple Clauses & Cleft SentencesFirst Conditional SentenceCountable & Noncountable NounsPrepositions and ConjunctionsModals of DeductionOther quiz:
Grammar › ViewI would do helped you what you if were
A. would
B. if
C. you
D. were
Grammar › View
___ he arrived late, he still managed to catch the train.
A. Although
B. Even though
C. Despite
D. However