.......................

24 Where were the children last weekend? They were at the museum.
25 Yesterday I saw a big blue Ford parking in front of our house.
26 Karol hasn't been to this house since she was a child.
27 The lecture has just begun . You are late.
28 He broke his leg in a skiing accident last winter.
29 He doesn't know my husband. He has never met him.
30 I hasn't bought a warm coat yet.

24. Were, were
25. Saw
26. Hasnt been
27. Has just begun
28. Broke
29. Has never met
30. Hasnt bought