УПРОСТИТЕ, ПОЖАЛУЙСТА
3р(р-5)-(р-4)(р+8)

помогите.

поставти have,has,was,were

1)"... you ever been to the Kremlin?"-"Of course, we ... .We ... there last Sunday." 

2)"My little sister ... not been to the zoo yet/ ... your little brother been there?"- "Yes, he ... He ... at the zoo last weekend.But I ... not been there for ages.Let s all go together.It s worth visiting in MJay."

3)They ... already been to the  museum.They ... there last month.