Every student as well as some teachers who to visit the Forbidden Cityasked to be at schoo

问题补充：

Every student as well as some teachers who to visit the Forbidden City

asked to be at school gate before 6:00 in the morning.

A. are；are

B. is；is

C. is；are

D. are；is

答案：

A. are；are

B. is；is

C. is；are

(答案→)D. are；is

解析：考查主谓一致。who to visit the Forbidden City是teachers的定语从句，定语从句的系动词和先行词保持一致，先行词teachers是复数，所以who后面用系动词are，排除B,C；as well as连接两个并列主语时，谓语动词和前一个主语保持一致，因为Every student是单数，所以第二空用is 。所以选D。