GWD21-Q12

Birds known as honeyguides exhibit a unique pattern of behavior:  the bird leads another animal, such as a honey-badger or a human, to a bees’ nest with their chattering when they fly ahead; after the larger animal takes honey, the bird eats the wax and bee larvae.

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

我选了B，请教with的用法

这道题的正确答案应该是C,为什么不选B 因为 and 是conj， 因此它连接的前后部分必须对称但是这个句中，lead to do 和 its flying 明显不对称，所以不可以选B.

至于with 的用法表示伴随情况或说明造成某一局面的原因

with all this work to do ,I don't know if i'll have time to go out.

谢谢！

C

至於B,D are unparallel due to position of
'its'.←这个是国外网站写的，Ving 跟所有格+Ving算不平衡。