[ 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 › ViewWhich word is the verb in the sentence?
The tree fell onto the car.
A. car
B. tree
C. fell
D. The
Present Perfect Tense › View
He started to work in the office at 8 o’clock. It’s now 12 o’clock and he just stopped it. It means that he …. for four hours.
A. has worked
B. worked
C. has been working
D. is working
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