Children under 12 years of age in that country __be under adult supervision when in a public librarA.mustB.mayC.canD.need

children under the children are under perfect discipline.under perfect是什么意思 Warning:NOT suitable for children under 3 Children under 12 years of age in that country __be under adult supervision when in a public library.A.mustB.mayC.canD.need Children under 12 years of age in that country __be under adult supervision when in a public librarA.mustB.mayC.canD.need children under 12 years of age in that country be under adult supervision when in a public library.a.must bmay c need.为什么不选A呢? children under 12 years of age in that country be under adult supervision when in a public library.a.must bmay c need.为什么不选A呢? 英语翻译WARNINGCHOKING HAZARD-small partsNot for children under 5 years In these years many children are under p____. Many children nowadays are under too much p__ There are three children play under the tree.(改正错误） The children are (under the tree)对括号提问 hao do you feel about children under 6 years old? children under 10 must before swimming in the poor children under 1.4 metres tall are free（同义句改写）children under 1.4 meters ____ ____ are free. ye,ye是什么意思? Teachers recommend parents_their children under 12 to ride bicycles to school for safety.not allow do not allow mustn't allow couldn't allowB答案不是强调么? under