[ Tenses and Passive Voice ]
. By 2030, scientists _____ on a cure for this disease for decades.
A. will have been researching
B. will be researching
C. will have researched
D. will research

Random Topics:
Comparatives - SuperlativesMixed ConditionalsModal Verbs for SpeculationFuture - be going toIntermediate PrepositionsSynonymAdverbs, Prefixes, and SuffixesPassive Voice - Present Simple and Past SimpleAdverbs or AdjectivesFor vs SinceOther quiz:
Grammar Clauses › ViewSpot’s tail is so big it has its own zip code!
A. noun
B. pronoun
C. neither
Third Conditional › View
Complete the sentence: “If you ______ (not forget) your umbrella, you wouldn’t have gotten wet.”
A. didn’t forget
B. hadn’t forgotten
C. haven’t forgotten
D. wouldn’t forget
Grammar › ViewVisitors can admire the numerous historical buildings in Prague, __ were built hundreds of years ago.
A. some of that
B. some of it
C. some of which
D. some of what
Comparision › View
The blue car ___________ the red car.
A. is as fast as
B. are as fast as
C. is as fast
D. are as fast
