[ Grammar and Vocabulary ]
How long ___ they known each other?
A. have
B. has
C. do
D. are

Random Topics:
Verbs & Verb TensesAdjective Clause and Adverb ClausePossessive PronounsVerb to Be Tenses & Object PronounPhrasal Verbs and Verb FormsPast Tense, Recount Text, and Future TenseIf ConditionalsPresent Tense vs Past TensePassive Voice & Verb TensesSpeculation with Modal VerbsOther quiz:
Grammar › ViewThe lecturer last night didn’t know what he was talking about, but if Professor Madison _____, I would have listened carefully.
A. had been lecturing
B. was lecturing
C. would lecture
D. lectured
Grammar and Sentence Structure › View
. Which sentence has correct punctuation?
A. According to figures beef and vegetables emit the most greenhouse gases
B. According to figures, beef and vegetables emit the most greenhouse gases
C. According to figures: beef and vegetables emit the most greenhouse gases
Grammar › View___ this building big and beautiful?
A. Is
B. Are
Grammar - either...or, neither...nor › View
Shawn, ________ do your homework ______ set the table for supper.
A. whether…or
B. neither…nor
C. both…and
D. either…or
