1, He regretted not saying goodbye to her at the airport.

2, When we were having our lunch, there was a knock at the door.

3, They always play badminton on Tuesday.

4, Adrian puts on jeans all the time.

5, He admitted breaking that vase.

6, The teacher didn’t let the class leave before 4:30.

7, I can’t stand getting up in the dark.

8, Would you mind opening the windows?

9, It’s best to avoid traveling during rush hour.

10, Gerry failed to arrive on time.

11, After I had cleaned the floor, I listened to music.

12, Before Sue left the house, she had checked that he had her keys.

13, After Kate had taken two aspirins, she felt better.

14, Before John bought a new car, he had checked all the prices.

15, She started writing when her children left home.