Vessels are required（）Singapore Port Service when passing the points indicated. ["communicating with","to communicate with","be communicated","will communicate"]
安全套社会市场营销的主要目的是什么？
Vessels are warned（）in this area. ["to not anchor","to anchor not","not to anchor","not anchor to"]
性病艾滋病咨询的目的是什么？
Vessels must be（）valid certificate of nationality or certificated of registry or license. ["acquiring","with possession of","required for","in possession of"]
性病艾滋病咨询的作用是什么？
