1) I told lie to my close friend, it was wrong of me.

→ I regret having told lie to my close friend.

2) Yesterday, while he was driving home, he bought a bouquet for his mom.

→ Yesterday, while he was driving home, he stopped to buy a bouquet for his mom.

3) I was thinking of my new floppy cotton hat so I didn't listen to her.

→ I was busy to think of my new floppy cotton hat so I didn't listen to her.

4) Tom lets his friend use his computer.

→ Tom allows his friend to use his computer.

5) The custom officer told him to open the briefcase.

→ The custom officer made him open the briefcase.

regret + having + V₃: hối tiếc vì đã làm một việc gì đó

stop + to V_inf: tạm dừng một việc gì đó đang làm để thực hiện một việc khác

S + linking verb + Adj + to V_inf

allow + to V_inf: cho phép

make + somebody + do something: khiến ai đó làm gì