Complete the sentences with in, on, at, ago or x (for no preposition.)

Example:
0. I came to Qatar _______ four years ago.
Answer:
I came to Qatar x four years ago.

1. Somebody robbed HSBC yesterday.
2. Monday I felt very ill.
3. I felt very nervous the last time I went on a boat.
4. The concert started seven thirty.
5. January I went to my cousin's wedding.
6. I took the 1B exam the 14th December.
7. I often go for a run the weekend.
8. the 1940's films were still in black and white.
9. I last felt like going for a run Satuday morning.
10. the nineteenth century Qatar was a very poor country.