[ Indefinite Pronoun ]
__________we did to rescue the dog was useful. It died.
A. Nothing
B. Something
C. Everything

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Adjective Suffixes › ViewWatching series is a ——– way to learn English
A. useful
B. useless
C. using
D. used
Infinitives and Gerunds › View
Did she have time ____ the project?
A. to finish
B. finishing