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题库 / OG12-SC-94
The recent surge in the number of airplane flights has clogged the nation's air-traffic control system, to lead to 55 percent more delays at airports, and prompts fears among some officials that safety is being compromised.
to lead to 55 percent more delays at airports, and prompts
leading to 55 percent more delay at airports and prompting
to lead to a 55 percent increase in delay at airports and prompt
to lead to an increase of 55 percent in delays at airports, and prompted
leading to a 55 percent increase in delays at airports and prompting
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求辨析B/E选项，谢谢
55 percent more delay is unclear.
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