Put the verbs into the correct tense : 1. columbus (discover) america more than 5 hundred years ago. 2.i came up to the window.it (stop) raining and the sun (shine) brightly in the sky. 3. since when you (know) him? 4.look through the window. it (rain). 5. they (not speak) to each other for over three weeks.

1. Columbus discovered America more than 5 hundred years ago.
2. I came up to the window.It had stopped raining and the sun was shining brightly in the sky.
3. Since when have you known him?
4. Look through the window. It is raining.
5. They have not been speaking to each other for over three weeks.