Choose the best answer
1. We (meet/met) when we (are/were) in the university.
2. The world's biggest shopping center (is/was) in Tokyo.
3. This company (employs/employed) 2,000 people.
4. (I set up my own business in 2015/ I want to set up my own business)
5. (Amazon sell a lot of things, not just book/ When it started, Amazon only sold books)