Ответ:

Leave-left-left

put-put-put

keep-kept-kept

blow-blew-blown

burn-burnt-burnt

let-let-let

learn-learnt-learnt

fly-flew-flown

4.

1-stopped

2-did you include

3-flies

4-tell

5-was working

6-have been walking

7-have you finished

8-never heard, was

5.

1-curious

2-everyone

3-support

4-others

5-other

6-twin

7-especially