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Student:

想請教老師或是同學這兩題的being應該要如何還原，省略會出什麼問題呢？謝謝

382. In his research paper, Dr. Frosh, medical director of the Payne Whitney Clinic, distinguishes mood swings, which may be violent without their being grounded in mental disease, from genuine manic-depressive psychosis.

(B)mood swings , perhaps violent without being grounded in mental disease, and genuine manic-depressive psychosis

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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. 
(B) leading to 55 percent more delay at airports and prompting