Помогите пожалуйста срочно нужно сделать номер 4

Question

Помогите пожалуйста срочно нужно сделать номер 4

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Answer 1

2a - has broken
b.how did that happen?
a.fell off

3a - have you had
a.who did it?(Who did cut it?)\ did you go
b. did it