Question

i waited for them change into past perfect tense​

Answer 1

I had waited for them.

What is past perfect tense?

• In the English language, the past perfect tense is used for  something that was completed before some point in the past.

• The past perfect tense is also called the pluperfect.
• The formula for past perfect tense is  had + [past participle].
• For example, she had completed her homework.