17. We (have) a letter last wee 18. They (not go) to school tomorrow. 19. When you last (see) your brother? 20. Water (freeze) at 0 degree

Respuesta :

Answer: we had a letter last week, they are not going to school tomorrow, when did you last see your brother, water freezes ate 0 degrees.

Explanation:

change the present tense to past tense future tense.