№168
1. Canned food was introduced byHenry John Heinz in 1869.
2. The world's first traffic light was introduced be the USA in 1914.
3. The first car was built by Henry Ford in 1893.
4. The first liquid-fuelled rocket was launched by Robbert Goddarb in 1874.
5. A sewing machine was invented by Elias Howe in 1846.
№169
1. have been invented
2. was introduced
3. was invented