2 The
police officer asked him if he had seen the robbers. 3 The police officer asked
him what the robbers were wearing* 4 The police officer asked him how he
thought the robbers had got in 5 The police officer asked him what the robbers
had taken 6 The police officer asked him if that had ever happened before.
* в 3 можно и
had been wearing, но were wearing точно правильно, т
к were wearing
(at the time of the robbery), т е есть точное время в прошлом