S+ have/ has + V3
Example: I have eaten breakfast.
1.-The boys (give) many problems.
2.- It (be) warm this week.
3.-They (prepare) a lot of food.
4.-The pupils (study) for their exam.
5.-The boy (fall) off his bike.
6.-He just out. (go)
7.-My grandmother (lose) weight.
8.-We always to visit Spain. (want)
9.-The sun (rise). It's time to go.
10.-Lucy (sing) in a chorus before.