XI. Complete the following sentences with the past form of the verbs in brackets.
Close      ask      laugh     jump      rescue        start         stop         walk     try         study
1. My father __________________ Math at university.
2. We were very tired so we __________________ walking.
3. I __________________ to pick the bag up, but it was very heavy.
4. The firemen __________________ the woman from the burning house.
5. The cat __________________ up into the tree.    6. After the film, we __________________ home.
7. It was very cold so we __________________ the window. 8. You are late! The lesson __________________ ten minutes ago.
9. The teacher _______________ a lot of questions yesterday. 10. The programme was very funny, we _____________ a lot.