The students ....... a lot of money for a peruvoan Zoo before they .... there . A) have raised, went B) had raised ,

The students had raised a lot of money for a Zoo before they went there. — Студенты собрали много денег для зоопарка, прежде чем отправились туда.

The students had not raised a lot of money for a Zoo before they went there.

A lot of money for a Zoo had been raised by students before they went there. — Много денег для зоопарка было собрано студентами , прежде чем они пошли туда.