[ Future Perfect Continuous Tense ]
The construction workers … for more than 90 minutes when the bell ring.
A. wouldn’t have been sleeping
B. won’t have been sleeping

Random Topics:
Question TagCorrelative ConjunctionModal SpeculationConditional Sentence Type 3On, At, BySimple and Continuous Present TenseSimiles, Metaphors, Personification and HyperboleComparativeModals of AdvisabilitySubject Verb Agreement and Verb TensesOther quiz:
Grammar › ViewWhich is the complete subject of the following sentence?
Hair on your head grows a half inch each month.
A. Hair on your head
B. Hair
C. grows a half inch
D. on your head grows a half inch each month
Tenses › View
Which tense is the word “jumped”
A. Past
B. Present
C. Future
Grammar › ViewHarry up, you will ___ the train.
A. lose
B. fall
C. miss
Grammar › View
He has published ________ articles on various topics.
A. a wide range of
B. a variety of
C. an array of
D. a number of
