[ Synonyms and Vocabulary ]
Scientists need to _______ their hypothesis through careful experimentation.
What is the best word to complete the sentence?
A. validate
B. maintain
C. minimize
D. suggest
Select your answer:
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Grammar Errors › ViewWhich sentence is in the present continuous tense?
A. I play football.
B. I playing football.
C. I am playing football.
D. I was play football.
Grammar › View
_______ grade are you in?
A. When
B. Which
C. Where
D. How