[ Tenses ]
How long ______ they ______ each other? ( to know )
A. do ____ know
B. have _____ known
C. have ______ been knowing
D. did _____ know
Select your answer:
Random Topics:
Grammar - Capitalization and Possessive NounsArticles and PronounsComparative Adjectives and AdverbsConditional 0DEGREE COMPARISON-ing &-ed AdjectivesGerund or InfinitiveComparison & Modal Verbs in Passive VoiceThe First Conditional (if/unless)Other quiz:
Grammar › ViewThey have worked there …. July.
A. since
B. for
C. by
D. out in
Adjective › View
I heard some _____ news on the radio.
a.surprising
b.surprised