1 B => businessman
2 A => the first inventors
3 C => had been working
4 D => go
5 D=> preventing
6 C => to receive
7 A => terrible
8 D => had moved
9 A => was awarded
10 A => was interupted
11 B => bỏ
12 C => bỏ, have thành has
13 D => didn't you
14 A => had been running