求一道英语完形填空的答案

问题描述:

求一道英语完形填空的答案
Last week I took my children to a restaurant.My six-year-old-son asked if he could say grace.As we ___ our heads he said," God is great .God is great .
1 A.raised B.turned C.bowed D.shook

shook shake的过去式
shake our heads 摇头,表示不同意