Birds known ashoneyguides exhibit a unique pattern of behavior: the bird leads another animal, such as ahoney-badger or a human, to a bees’ nest with their chattering when they flyahead; after the larger animal takes honey, the bird eats the wax and beelarvae. A. with their chattering when they fly B. with chattering and its flying C. by chattering as it flies D. by chattering and its flying E. by chattering as they are flying
答案C,有老帖说ving and 所有格 ving是不平行的。这题的划线部分我妹看明白什么意思。排除AE后,剩下BCD怎么做判断?
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