Setze das Simple Past ein.

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