2. I work ---------- (on / in / at) a bank but my sister works ---------- (on / in / at) a store.

3. My grandfather was born ---------- (on / in / at) Tehran ---------- (on / in / at) 1320.

4. ---------- (On / In / At) Friday night I went to bed ---------- (on / in / at) midnight.

5. The bus was very full. There were too many people ---------- (on / in / at) it.

6. It was a lovely day. There wasn't a cloud ---------- (on / in / at) the sky.