[ Present Perfect Tenses ]
They ______ their project for three months.
A. have been working on
B. work on
C. worked on
D. are working on

Random Topics:
Present ContinuousLinking VerbRelative Clauses PronounsCollective NounsNoun PhraseSimple Future - Passivewas wereAdjectives and DegreesPast Continuous Tense & Past ModalsSubject, Object, Possessive Pronoun and Possessive AdjectivesOther quiz:
Vocabulary › ViewShe received a ___________ award for her research.
A. prestigious
B. prestige
C. prestigiously
D. prestigiosity
Adjective vs. Adverb › View
The TV’s far too ____.
A. Loudly
B. Loud
C. Both loudly and loud can be used
It_____pretty.
A. is
B. are
C. am
Phrasal Verb › View
It’s very difficult to break ……. with someone who you still love.
A. in
B. up
C. down
D. out
