1.B if any 若有的话；即便要 这个是固定短语
2.C 【as well as some teachers who_____going to visit the museum】【这儿是一个介词短语】.这句话真正的主语是Every students,所以后面的asked 前的be动词要用is.
【who_____going to visit the museum】定语从句,修饰的是teacher s,所以who 后面要用are.
3.A as well as three other boys,介词短语,真正的主语是Tom,单数,所以用is.
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