My friend Bob always ____ jokes whenever we get together.
A. says
B. speaks
C. talks
D. tells
Family members worked hard ____ sure that they had enough food.
A. making
B. make
C. made
D. to make
发放纸卡时,纸卡上不必标注的内容有()。
A. 收费员编号
B. 发卡时间
C. 路线名称
D. 收费站编号
各类预警信息必须来源于()或权威机构以及内部监控、巡查、报告等正规渠道。
A. 新闻媒体
B. 社会团体
C. 政府部门
D. 科研机构