He walked ___ along the dark corridor. (CAUTION)
Answer and explanation
Correct answer: B. cautiously
- Step 1: Work out which part of speech the gap needs. Step 2. An adverb modifies the verb 'walked'. Answer: cautiously. Why not the others: 'Cautious' is an adjective, 'caution' a noun and 'cautioning' a participle.
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More Word formation questions
- The ___ of the new library attracted hundreds of visitors. (OPEN)
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