they have left their hometown since 2000语法有错吗

they have left their hometown since 2000语法有错吗 they ()their hoildays in their hometown Aplan have B planned many great changed have taken place since you left.这语法是对的吗? They have left their horse.=They have____ ____. they have much snow in winter in their hometown的同义句是什么 _the soldier is help,they have rebuilt their hometown. A.Of he left home last year and I have never seen him since这句话语法对 It was ten years since I left my hometown.改错 It's 5 yeas since he left his hometown.意思? they have been here since 2000 高中语法选择,请教语法好的同学：They have been in the library since ( 初中英语句型转换.They have just left home.(用since two da