The test was so difficult that they couldn't finish it

`->` It was such a difficult test that they couldn't finish it.

`-` such +( a/an) + adj+ that + clause: ...đến nỗi mà...

Alice should go to the door

`->` If I were Alice, I would go to the door.

`-` Câu điều kiện loại `2`: 

If+ S+ V2/V-ed, S+ would/could + V +..

1. It was such a difficult test that they couldn't finish it.

S + be + such + (a/an)+ ADJ + N + that + clause: quá .. đến nỗi

2. If I were Alice, I would go to the doctor.

If 2: If + QKĐ, S + would / could + V1

`color{orange}{~LeAiFuRuiHuiBao~}`