[ Tenses ]
They __ (work) on the project for several months now.
A. are working
B. work
C. have been working
D. have worked

Random Topics:
ConditionalPresent Simple/AffirmativeAdjective vs AdverbIf/Unless - Conditional type 1Preposition of DirectionGrammar (want to/ need to/ have to)Vocabulary and IdiomsBe going to / WillVerb AbilityPast PerfectOther quiz:
Sentences › ViewGet off the chicken!
A. declarative
B. interrogative
C. imperative
D. exclamatory
Past Simple Tense › View
I ____ sleep very well last night.
A. wasn’t
B. hadn’t
C. didn’t
Grammar › ViewWhat are you afraid…………?
A. to
B. with
C. of
Grammar and Vocabulary › View
When ________ you visit the new school?
A. did
B. had
C. went
