The recent surge in the number of airplane flightshas clogged the nation’s air-traffic control system, to lead to 55 percentmore delays at airports, and prompts fears among some officials that safetyis being compromised.
(C) leading to 55 percent more delay at airports and prompting
(E) leading to a 55 percent increase in delays at airportsand prompting
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发表于 2018-1-9 10:11:59
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