where have they lunch?

Where have they been? where have they lunch? where have all they flowers where have they gone?答语急呀 where have they been?是现在完成时吗? 英语翻译翻译几个句子They had a meal at a restaurant.They ate a meal at a restaurant.We had a holiday last month.We went for a holiday last math.Have a biscuitTake a biscuit.You had a good time.You enioyed yourself.They are having their lunc 1,We have understood where--- 2,They have all read where----《空格怎么填?》 I do not know where they have laid him Where are they going to have a wouderful weekend? The (a ) where they live have many problem with pollution. Where are they going to have dinner?吾知 They have all read where______啥意思?剑桥三级题目:They have all read where Where have they been?能不能说：They have been in their room. They have reach the poine where they have to sperate with each other 为什么说：Where have they been?我知道这是过去完成时,但是为什么不是Where have been they? We have understood where、They have all read where和Sarah has heard where填这些从句, they haven't decided where they would have a party(改为简单句)they haven't decided ( )( )have a party Where have all the young girls gone?Where did they all gone?