妈妈的姐姐是____，妈妈姐姐的老公是____。
She is looking forward to _____ president of the university.
为了净化学生的学习环境，某市有关部门联合执法，全面整治学校周边的网吧。这一举措体现了对未成年人的 ( )
what ,be ,an ,last, some ,the, in ,your ,black ,my ,call, how
Hello, everyone. I ____ Frank Smith.Frank is my first name.My ____name is Smith.This is my schoolbag.It's ____. In it,you can see ____books and a pencil box. ____ is that? Oh,it is a watch. And ____ watch is yellow. It isn't____ . I found it ____ Class 7A. Is it ____? Please ____ Frank at 9556833.
在“观察叶片的结构”实验中，如图表示将叶片制成切片，并在显微镜下观察到叶片结构的情况．据图回答问题：在图中的方框内填写有关结构的名称．
