That was the time ...I left him 1.when 2.where 3.After which​

when

Объяснение:

That was a time when I left him.

Объяснение:

When

1.i see the plane in the sky.

2. a lot of factories polute our atmosphere.

3. sun is the biggest star in our galaxy.

4. people went to the moon in the 20th century.

1)in,2)in,)from5)in,6)in