The technology, _______ over several years, has revolutionized the industry.
A. developing
B. developed
C. develops
D. develop

Random Topics:
Grammar: so and suchContractions and ConjunctionsPunctuationsFamily Members and Present SimplePassive with ModalsPresent Perfect ContinuousProgessive TensesQuestion TagsGrammar (Adverbs, Prepositions, Prepositional Phrases)GerundOther quiz:
Grammar › ViewIdentify the correct sentence.
A. My sister, Jacinda, loves to set on her vanity stool and applies her make up, watching TV and listening to music, all at the same time.
B. My sister, Jacinda loves to sit on her vanity stool applying her make up, watching TV and listening to music, all at the same time.
C. My sister, Jacinda, loves sitting on her vanity stool, applying her make up, watching TV and listening to music, all at the same time.
D. My sister, Jacinda, loves to set on her vanity stool while she applies her make up, watches TV and listens to music.
Conjunctions and Commas › View
I looked everywhere _______ I couldn’t find my other sock.
A. and
B. so
C. but
D. or
Correlative Conjunction & Complex Sentences › ViewThis car is so expensive, ….?
A. is it
B. isn’t it
C. aren’t you
D. aren’t I
Past Tenses › View
Marian … Mary two years ago.
A. has met
B. was meeting
C. met
