资料1:报关单 中华人民共和国海关进口货物报关单 预录入编号: 海关编号:
请根据以上资料,选择以下栏目的正确选项:
“数量及单位”栏:( )。
参考答案:A
The children talked so loudly at dinner table that I had to struggle _____. [ ]
A. to be heard
B. to have heard
C. hearing
D. being heard
人的安全行为