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Keys:
1. We have to do it ourselves.
2. Does Mary have to study hard at English?
3. He had to get up early last Sunday.
4. You don¡¯t have to worry about your lessons.
5. Peter was very tired and he had to sit down and have a rest.
j) Homework
1. Read the dialogue and try to make a new one.
2. Make sentences using ¡°have to¡±.
3. Do exercises on page 79.
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