Viết lại câu: It started to rain at 2 o'clock

1.It started to rain at 2 o'clock.
=>It has………
2.John and Mary moved to Edinburgh twenty years ago.
=>It is………
3. I have never seen a dỉtier-looking dog.
=>This is………
4. Mary rang hours and hours ago.
=>It is hours………
5. It is ages since Alan visited his parents.
=>Alan………