[ 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
Select your answer:
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Grammar › ViewWhich is a fragment?
A. A lemur is an animal similar to a monkey.
B. Flying south for the winter.
C. The life guard blew his whistle
D. My grandparents went on a trip to Oregon.
Idioms › View
I don’t know why their marriage is breaking ___ .
a. through
b. in
c. up