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题库 / Prep2007E1-SC-14
Having finally reached a tentative labor agreement with its company's pilots, it must now be determined by the airline's board of directors how the airline can both increase profits and compete more effectively for customers than they did in the past.
it must now be determined by the airline's board of directors how the airline can both increase profits and compete more effectively for customers than they did in the past
it must now be determined by the airline's board of directors how the airline can both increase profits and must compete more effectively than in the past for customers
the airline's board of directors must now determine both how to make the airline increase profits and compete more effectively for customers than they did in the past
the airline's board of directors must now determine how the airline can both increase profits and compete more effectively for customers than it did in the past
the airline's board of directors must now determine how the airline can both increase profits and also how to make it compete more effectively than in the past for customers
1. it根据句意是要指代公司，但是前文没出现，无法指代，杀AB，后半句必须写清楚谁reached
2. both and 之中必须平行，杀BCE B横加must句意改变
3. A中 they指代不清
4. BE中 句尾 for customers有歧义
5. 主谓一致board+it ，杀C
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