[ 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:
Grammar (want to/ need to/ have to) › ViewJack isn’t feeling well, but he doesn’t ________ be absent today.
A. want to
B. have to
Reported Speech › View
Our teacher asked us, ‘What are you most worried about?’
A. Our teacher asked us what we were most worried about.
B. Our teacher asked us what we are most worried about.
C. Our teacher asked us what we was most worried about.
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