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Select the most appropriate option to fill in the blank.
The mystery behind the extinction of the dinosaurs ______ obscure.
is still
are still
be still
being still
- Option 1: is still
- This option is correct.
- "The mystery" is a singular noun, so it uses the singular verb "is."
-
- Option 2: are still
- This option is incorrect.
- "Are" is used for plural nouns, and "the mystery" is singular.
- Option 3: be still
- This option is grammatically incorrect in this context.
- "Be" is not used as a conjugated verb form for singular or plural nouns here.
- Option 4: being still
- This option is incorrect because "being" requires a helping verb for proper tense.
- It doesn't fit the sentence structure as-is.
By: santosh ProfileResourcesReport error
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