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:
Grammar › ViewWe ______ (be) here ______ nine o’clock.
A. We have been here since nine o’clock.
B. We have been here for nine o’clock.
C. We has been here for nine o’clock.
D. We has been here since nine o’clock.
Tenses › View
Choose the best answer to complete the following answer:
What ___ at 7 p.m. yesterday?
A. were you doing
B. are you doing
C. do you do
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
