Peter and Edward _______ each other since the first grade of elementary school.
A. have been knowing
B. have known
C. have been known

Random Topics:
Clause Markers TOEFL GrammarPrepositions and ArticlesGerund and InfinitivesPresent Perfect & Past Simple TensePhrasal VerbsVerb + PrepositionNouns - Word Form-IONModals of Obligationtake, make, doDeterminersOther quiz:
Tenses › ViewMy children (not travel) __________ around Asia now.
A. Present Continuous – travel
B. Present Continuous – is travelling
C. Simple Present – is travelling
D. Simple Present – travelling
Countable and Uncountable Nouns › View
That old woman has ___________ cats in her kitchen.
A. a few
B. a little
Grammar › ViewChoose the correct answer
A. They studying using internet every Saturday morning.
B. They studys using internet every Saturday morning.
C. They study using internet every Saturday morning.
D. They are studying using internet every Saturday morning..
Grammar › View
They _____________ to the new museum last Saturday.
A. will go
B. have gone
C. are going
D. went
