1)
was, wrote, got, took, had, saw, was
2) He did not work at the hospital last summer. They did not go to the library on Saturday. Ann did not come late last night.
3) Who got up at 7 o'clock on Monday? What time did he get up on Monday? When did he get up at 7 o'clock? Did he get up at 7 o'clock on Monday?
Who were in the Zoo last week? Where were they last week? When were they in the Zoo?