[ 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:
Tenses › ViewThey … to stay at home for two weeks because of the possibility of rabies (la rabia).
A. had
B. were having
C. had had
Question Tags › View
Chompoo and Nott work,______?
A. Do they
B. Don’t they
C. Are they
D. Do Chompoo and Nott
Sam 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
