Thanks to the campaign,public ____________ (aware) of agricultural product quality and food ________

题目

Thanks to the campaign,public ____________ (aware) of agricultural product quality and food __________ (safe) ___________ (strengthen).
答案是awareness safety has been strengthened,
把语法点都解释下

答案

意识 安全 已经被加强
第一个空看得出肯定填名词,public awareness 意思是公众意识
第二个空也填名词,safe的名词也只有safety,food safety意思是食品安全,和and前的农产品质量并列.
第三个空是谓语,填动词,有意思得出被动语态,句首也说明这件事已经完成,用完成时.