They built a house yesterday. They will build a house tomorrow. Написать отрицательное и вопросительное должно получится 4 предложения

Did they build a house yesterday? They did'n build a house yesterday.Will they build a house tomorrow?They will not build a house tomorrow.

1) They didn't build a house yesterday.     Did they build a house yesterday?2) They will not (или won't) build a house tomorrow.     Will they build a house tomorrow?