Verified answer

1 saw, would tell

2 left, would pay

3 lost, couldn't return

4 visited, would see

5 were lost (заблудился), would use

6 followed, wouldn't happen (предложение в задании не закончено)

7 saw, would put it away (в задании пропущено слово it)

8 developed, would develop

9 took, would be

10 didn't take, would be