сделайте последующие предложения, используя past perfect1) Doris explained that he (

Выполните последующие предложения, используя past perfect
1) Doris explained that he ( not to understand) rule number.
2)Angela wanted to know if they( to be) there before .
3)Olaf asked if we (to buy ) tickets for the new play.
4) mother wondered if James ( to pay) for the tickets to Paris .
5) Aunt Grace said she ( to visit ) the Bahrushin Theatre Museum in Moscow .
6) She added that she ( to spend ) three hours there
7) Andrew told his brother he ( to choose ) a birthday present for their mother.
Помогите пожалуйста!!!!! очень срочно!!!!!!!!