#006 - Past tense or past perfect?

Fill in all the gaps, then press "Check" to check your answers.
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ak LogoWhen Mary (to come) home from school two months ago, she (to see) that someone (to steal) her bike. After she (to phone) the police, an inspector (to come) around at once and (to ask) her some questions. After the inspector (to get) the necessary information, he (to want) to find the criminal. The inspector, who (to have) his job for more than 20 years, (never, to have) any problems in such a case. They usually (to find) the criminal after they (to look) for him for some weeks.