[ Grammar ]
He talked about the books and authors __________ impressed him.
A. who
B. that
C. which
D. whom

Random Topics:
Pronouns and AdverbsVerb & GrammarMust Vs Have toRelative - ConditionalPreposition of PlacePassive Voice Present SimpleModals and Semi-ModalsSynonymProgressive Perfect and Simple Verb TensesDemonstrative PronounOther quiz:
Past Perfect Simple › ViewI won’t be able to join you at dinner because I _____.
A. had already eaten
B. have already eaten
C. ate
D. will eat
Future Simple › View
They _______ (have) a garden party soon.
A. have
B. will have
C. are going to have
D. are having
