Choose the correct tense and circle it. Notice which action is first. When my aunt arrived/had arrived home after her holidays, she found/had found that there was/were no lights in the house. After she called/had called a friend for help, she saw/had seen that there was some water next to the fridge. My aunt quickly left/had left the flat and spent/had spent the night in a hotel. The next day everything was ok so she could go back home. The police told/had told her not to touch anything before the investigators arrived/had arrived. Fortunately, she had/had had a home insurance.

Tense is described as the time. In grammar, the different forms of the verb help in denoting the time at which the action takes place. It can be past, present, or future.

The first sentence involves the past perfect tense and therefore, the action that took place first would be written using 'had + V3'(had arrived') and latter action using 'V2'(found'). 'were' in the latter part as the noun 'lights' is the plural.

The next sentence is also written in past perfect and therefore, the first action can be written using 'had + V3'(had called) and the latter action in past indefinite(saw).

The next sentence can be filled using the past indefinite as it is joined using the coordinating conjunction 'and' and therefore, both the actions would be written in the same form i.e. 'V2'(left' and 'spent').

The next sentence expresses the reported speech and thus, it would be written using past indefinite in the first part('told') and 'arrives'(in the direct speech) would be converted into 'arrived'(in indirect).

The last sentence would use past indefinite(had) instead of past perfect(had had) because there is only one action.