Put the verbs in brackets into the correct verb form.
26. He(have)              dinner when his friend called.
27. She(cook)            at the moment. That’s why she can’t answer the phone.
28. Jane(leave)             just a few minutes ago.
29. She(be)             extremely quiet since her husband died.
30. A: “Do you know that Mrs. Janet(work)           here for sixteen years?”
      B: “I thought she(start)           working here ten years ago”.

Ảo