human facial expressions differ from those of animals in the degree___they can be controlledon purpose.知道固定用法can be controlled to the degree,但是in怎么办?in the degree是连着的吧?

facial Facial facial facial 请译Human facial expressions differ from the animals'in the degree to which they can be controlled. FACIAL YOGURT ultra facial human facial expressions differ from those of animals in the degree to whichhuman facial expressions differ from those of animals in the degree ______they can be controlled on purposeAwith whichBto whichCof whichDfor which为什么选B,另外这句 Human facial expressions differ from those of animals in the degree_____they can be controlled onpurposeA with which B to whichC of which D for which Human facial expressions differ from those of animals in the degree ____which they can be controlled on purpose.A.with B.to C.of D.for Human facial expressions differ from those of animals in the degree to which they can be controlled翻译,我要正确的!这个定语从句 human human human human human Human In contact with human beings,most dogs have understood a large_of messages from humanbehaviour:nodding,waving,facial expression and some greeting_.In addition,they have learnt to_the meanings of human language.From the voice of their_,dogs can tell w