Topics: Perfect Progressive Tenses
How long ______ (they/work) on this project before they finished it?
A. have they been working
B. had they been working
C. will they have been working
Select your answer:
Random Topics:
Past Simple and Past Continuous TensesThe Future Simple TenseVocabulary and TensesSimple Present and Past TenseAll, Both, Neither, None, EitherPast ParticipleAsking & Giving AttentionPassive Voice - Present Simple and Past SimpleVerb TensePassive Voice - Past SimpleOther quiz:
Idioms › ViewI can’t believe he ___ up the bill and paid for our dinner.
a. set
b. put
c. picked
Modal Auxiliary Verb › View
In California, you ___ have a driver’s license to drive a car.
A. Has to
B. Must
C. Don’t have to
D. Must not