Chia ở thì HTĐ
1. Mai ( be ) my friend.
2. Mai ( not, be ) my friend.
3. Mai ( be ) your friend?
4.These mice ( be ) big.
5. Those people ( be ) short?
6. She ( have ) a pen.
7. She ( do ) her homework?
8. He ( not, have ) a pen.
9. They ( have ) some milk.
10. They ( have ) a book ?
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