Question

The police was making an arrest. The police had made an arrest. The police will make an arrest. The police will have make an arrest
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Answer 1

1an arrest was made by the police.
2an arrest had been made by..........
3an arrest will be made by......
4an arrest will have been made......

Answer 2

An arrest was being made by the police. 
An arrest had been made by the police. 
An arrest will be made by the police.
An arrest will have been made by the police.