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Complete the sentences with present perfect forms.

1. The boy is eating an ice cream, but he_____ (not finish) it yet.

2. My cousin_____(come) to visit me, it was a big surprise.

3. Everybody in my class_____(do) today's homework.

4. Martin____(Forget) to pay the sandwich at the cafeteria.

5. Leonard and his brother____(plant) some trees in the garden.

6. Paola____(have) q baby boy this morning.

7. Lorena____(call) the doctor because her son was ill.

8. My grandmother_____(bake) some biscuits for me.

9. You____(write) the essay very quickly.

10. Charles____(sing) a romantic song for his girlfriend.

11. The scientist____(discover) a cure for mice.​