Time must be a valid time of day

Time must be a valid time of day This software must be activated prior to use.For activation,a valid SERIAL is essential. You must enter a valid PIN You must enter a valid birthdate. Your Message must be between 10 and 160 characters.You must supply a valid country to enter the competition.You must select a country.三句各是什么意思?急! is not a valid date and time Before leaving this country,you must be in__of a valid passport A provide B possession C core D lab “contact email address” 急用,安装CS时遇到的,不懂must be a valid account什么意思 you must enter a valid e-mail address什么意思 You must enter a valid e-mail address 是什么意思 Password does not appear to be valid.It must be between 6 and 20 characters 英语翻译In order for them to provide the necessary benefits ,dentists associated with the university's insurance policies must be shown a valid student ID card. 格拉斯哥申请宿舍遇到问题. Email Address must be a valid email address申请研究生邮箱遇到“ Email Address must be a valid email address”.说我的邮箱不是有效的邮箱.可是格大通过这个邮箱给我发过保证金的 You must be ＿nest time,or there may be another accident.A .carefully.B.careful. You must be there on time. start time must be less than end You must enter a valid address.这个是什么中文意思?有助于回答者给出准确的答案 You must enter a valid 5 digit zip code if you live in the United States.