Using ‘have to’, ‘has to’, ‘don’t have to’, ‘doesn’t have to’ or didn’t have to.’

1.We          study at school last month. Since the corona pandemic becomes worse we have to study from home now. 
2. They                  clean the bathroom yesterday because their mum had already cleaned it.
3.  Ramona and James              tidy their bedrooms before they could play outside yesterday.
4.  We            cross the street when it is red.
5. My mother               get up too early becuase she doesn't work today.
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Using ‘have to’, ‘has to’, ‘don’t have to’, ‘doesn’t have to’ or didn’t have to.’