[ Present Perfect Simple and Continuous ]
They ___ (know) each other for ten years!
A. have been knowing
B. have been knowed
C. have knowed
D. have known

Random Topics:
Modal Verbs of Deduction and SpeculationPresent Perfect and Past SimpleAdjective or AdverbTenses and VerbsComparisonsAdverbs by TypeFuture Continuous TensePresent Simple VS ContinuousSentences vs Run-OnsPast Continues TenseOther quiz:
Noun, Adjective, and Adverb Clauses › ViewHow is the clause being used in the sentence?
Mrs. Deal is looking for whoever ate her chocolate.
A. subject
B. direct object
C. subject complement
D. object of preposition
Grammar › View
Didn’t you park your car _______ mine?
A. inside
B. behind
C. around
Grammar › ViewSam and David are studying in the library, …?
A. isn’t he
B. aren’t they
C. doesn’t he
Grammar › View
______, I have to put it away and focus my attention on study this week.
A. However the book is amusing
B. No matter amusing the book is
C. However amusing the book is
D. No matter how the book is amusing