Finish each of the following sentences in such a way that it means the same as the sentence printed before it

Finish each of the following sentences in such a way that it means the same as the sentence printed before it.
1. Michael started playing golf 2 months ago.
? Michael has ___
2. She was reading book. She saw the floods and landslides in the area (When)
? _
3. Sam started learning the piano a month ago.

? Sam has___ .

4. He was walking home when it started to rain.

? While He___.