Question

3. The school board is made up of parents who    to make decisions about

school affairs.

A. had been elected       B.  had elected

C.  have been elected     D. have elected

Answer 1

3.    C考査动词的时态和语态。父母是被选上，用被动语态，排除B、D选项。再根据关键信息is made up of用的是现在时可知，选举一事对现在有影响，所以用现在完成时。