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Объяснение:

1 discovered

2 was discovered

3 am , will go

4 would be free

5 was walking , blew

6 cut,was making

7 is making

8 makes

9 stood , дальше не видно глагол((

10 is Jonathan doing, is studing

11 has been studing

12 has already studied

13 Whed did you hear...

14 has heard

15 had lost

16 belong

17 had been