【判断题】目前生产无毒苗最安全,最重要的一条途径是 茎尖培养脱毒
【单选题】_______you go to the same primary school as me?
【多选题】越剧曲调婉转柔美,下面属于越剧传统剧目的有哪几项?
【简答题】In America, children go to primary school at age of ______.
【单选题】—Have you ever been back to our primary school? —Yes,I go to see Mr Wang______. [ ]
【单选题】His son is only four years old. He is _____ to go to primary school this year. [ ]