Помогите пожалуйста(заранее спасибо)
№ 2. Перефразируйте предложения используя Perfect Infinitive (дивись модель):
a) Model: I could prepare the report but I didn’t do it. – I could have prepared the report.
1. They could help him but they didn’t do it.
2. She could pass her examination in chemistry but she failed.
3. She could buy this book but she didn’t buy it.
4. Our football players could win the match but they lost it.
5. I could learn the poem by heart but I had no time for it.
b) Model: I nearly lost my way. – I might have lost my way.
1. He nearly broke the window.
2. I nearly forgot about it.
3. She nearly fell asleep.
4. The news nearly killed him.
5. I nearly caught cold.
c) Model: I’m sure they arrived in Kyiv yesterday. – They must have arrived in Kyiv
yesterday.
1. I’m sure you saw the performance last year.
2. Evidently his daughter has finished the secondary school.
3. I’m sure he has fallen ill.
4. Evidently I have lost my pen.
5. I’m sure she has left the book at home.

Спасибо огромное)))

A1 They could have helped him but they didn't do it2 she could has passed her examinations in history but she faield3 She could have bought this book but she didn't buy it4 Our football players could have won the match but they lost it5 I could have learnt the poem by heart but i had no time for itB1. He might has broken the window.2. I might have forgotten about it.3. She might has fell asleep.4. The news might has killed him.5. I might have caught cold.C1. I must have been sure you saw the performance last year.2. Evidently his daughter must has finished the secondary school.3. I must have been sure he has fallen ill.4. Evidently I must have lost my pen.5. I must have been sure she has left the book at home.