Ответ:

Ex 2

ride - rode

fall - fell

teach - taught

meet - met

break - broke

slip - slipped

go - went

Ex 3

I have broken my arm TWICE

They have gone to hospital ten TIMES

We have not(havent) ridden a bike but we wanna(want to)

Fred has crashed his car

She has slipped on some ice

You havent fallen off..

My English hasnt taught..

Ex 4

havent had

have watched

havent met

have seen

has held

has sung

havent done

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