15.
Those who wished a favour of the emperor had to ______ on hands and knees before him.
A、
grope
B、
grovel
C、
grapple
D、
groove
【正确答案】
B
【答案解析】
grope摸索，grovel卑躬屈膝/匍匐，grapple格斗，groove刻沟/刻槽
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