Mixed exercises Simple Past
Fill in the correct form of the Simple Past. 
Yesterday it (to be) my friend´s birthday. He (to invite) a lot of friends from school. It (to be) very hot so we (to decide) to go to the swimming pool. The swimming pool (not to be) full so
we (to swim) a lot. Suddenly Joe (to fall) and (to hurt) himself. We (to call) an ambulance. He (not to stay) in hospital but he (to have) a broken arm.