[ Grammar ]
Robert Ballard invented an underwater robot. Which one is the verb?
A. robot
B. Robert Ballard
C. invented
D. underwater

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Grammar › ViewEveryone ________ finished reading the fairy tale.
A. has
B. have
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Sir Arthur Conan Doyle, who passed away many years ago, _________ Sherlock Holmes.
A. was creating
B. used to create
C. created
D. would create