`1.` It was the bike that was sold last by Minh week.

`->` Câu chẻ : It + was/be + N + that + be + PII (by O). 

`2.` The man standing over there is Tom's father.

`->` MĐQH giản lược `-` Chủ động : 

`+` Đổi V `->` Ving, bỏ ĐTQH + (be)

`3.` Built two years ago, this flat looked nice.

`->` Rút gọn MĐTN `-` Bị động : 

`+` Đổi V `->` PII 

`4.` It was him that graduated from CT university last year.

`->` Câu chẻ : It + was/be + N + that + V/S V

`5.` Walking to work, Khai felt tired.

`->` Rút gọn MĐTN `-` Chủ động :

`+` Đổi V `->` Ving

1. That old bike was sold by Minh last week

2. The man standing over there is Tom's father

3. Built two years ago, this flat looked nice.

4. he graduated from CT university last year

5. Walking, Khai felt tired because he went to work on foot.