A man look my bag while I _____1) have shopped 2) shopping 3) is shopping 4) was shopping​

Question

A man look my bag while I _____1) have shopped 2) shopping 3) is shopping 4) was shopping​

Answer 1

A man took my bag while I was shopping​.

Мужчина забрал мою сумку, в то время как (пока, когда) я ходила по магазинам.

Обычно после слова  while используется past continuous.