A participle has the following form: verb + -ing, and the only word in this sentence that takes that form is A, 'flying', which is the correct answer.
Tools used to measure length include a ruler, a Vernier caliper, and a micrometer screw gauge. Vernier calipers and micrometer screw gauges are more precise and can be used to measure the diameter of objects like pipe and wire.
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Answer:
Studying in different rooms seemed to improve memory.
Explanation:
