Исправте ошибки) Это 6 класс

Correct each sentence.1.-I'm going to London for Christmas.- Have good time!
2. I never saw such a beautiful bridge.
3. Foxes arebiger than rabbits.
4. I have never hear such a silly story.
5. Have you had lunch an hour ago?
6. He just came.
7. I haven't seen him last Thursday.
8. Have you ever been in Africa?
9. Our teacher was to London two years ago.
10. How many theatres were there in Moscow at an end of the 19-th century?