答案C。
【释义】
as well as
英 [æz wel æz] 美 [æz wɛl æz]
adv.
也,又;
释义
既…又…; 除…之外(也); 此外;
【翻译】
和其他老师一样,每一个要去博物馆参观的学生都要在早上7:30到校门口集合。
【答题解析】
主语是“Every student”,是单数,所以第二个空格是is;第一个空格对应的是前面的“who”,“who”指的是“some teachers”,是复数,所以用are
断句分析如下(粗体是副词,斜体是插入语):
Every student as well as some teachers who are to visit the museum is asked to be at the school gate before 7:30 in the morning.