Each boy and each girl as well as some teachers who _to visit thr farm _required to gather at the school gate at 6:30
问题描述：
Each boy and each girl as well as some teachers who _to visit thr farm _required to gather at the school gate at 6:30
A.are is B.is is C.is are D.are are
答
A
who _to visit thr farm 是some teachers的定语从句,所以用复数形式are,而后面的be动词用单数is,因为主语是each ...and each ...,这种形式当主语时都用单数形式.