Direction: In the following questions, sentences are given with blanks to be filled in with an appropriate word(s). Four alternatives are suggested for each question. Choose the correct alternative out of the four.
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Guard _______ spelling mistakes.
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- against
- after
- above
- at
- against
Correct Option: A
Here, against (Prep.) is the right usage.
guard against (Phr. V.) : to take care to avoid something or someone
