English Language · English
Which of the following sentences uses the idiom 'ABC of something' grammatically and correctly?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1He do knows the ABC of mathematics.
- 2He doesn't know the ABC of mathematics.✓
- 3He doesn't knows the ABC of mathematics.
- 4He don't know the ABC of mathematics.
Correct answer
He doesn't know the ABC of mathematics.
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