`1.`hadn't been - wouldn't have missed

`2.`had studied - would have passed

`3.`arrived - would have seen

`4.`had gone - wouldn’t have woken

`5.`had become - would have recorded

`6.`had gone - would have become

`7.`had been - would have learned 

`8.`had gone - would have studied

`9.`hadn't gone - wouldn’t have met

`10.`had taken - wouldn't have gone

`11.`would have been - had stayed

`12.`would have passed - had studied

`13.`wouldn’t have got - hadn’t gone

`=>`Cấu trúc câu điều kiện Loại 3 ( Unreal in the past ) :

If + S + had + Vpp, S + would/could/should (not) + have Vpp

`=>`Câu điều kiện Loại 3 là câu điều kiện không có thực trong quá khứ, chỉ mang tính ước muốn trong quá khứ, một giả thiết trái ngược với thực trạng ở quá khứ.

1-weren't/would'n missed (câu đk loại 2)

2-studies/will pass (loại 1)

3-arrive/will see (loại 1)

4-didn't go/wouldn't wake

5-becomes/will record

6-goes/will become

7-were/would learn

8-goes/will speak

9-don't go/won't meet

10-took/wouldn't go

11-would be/stayed

12-wil pass/studies

13-won't get/don't go