Verified answer

1)

1 lastminute.com

2 1980s

3 dot.com

4 33%

2)

1 was realized

2 were launched

3 didn't survive

4 has been proved

5 are now doing

3)

1 have tried

2 do customers spend

3 has risen

4 are integrating

5 starts

6 has been identified

7 was used

8 is already travelling