1.      They visited the museum. To addition, they went to the park. 

2.      I happened to having seen that film before.

3.      Brian apologized about having arrived late to the party.  

4.      He is supposed to have been met the American president.

5.      I need to stop do my homework late at night – I keep making terrible mistakes!

6.   He stopped eat sweets though he still craved them every day.

7.      The company decided to investing in new technologies.

8.      He has been working here since 2010.  Although, he still feels like a newcomer.

9.      I’m looking forward for meeting you next week.

10.  The film was fascinating if the plot was predictable.

11.  They warned us to touch the sculpture.

12.  The teacher allowed us to leaving the class early.

13.  I regret tell you that you, my dear friend,  have failed the exam.

14.  She was delighted be invited to the conference.

15.  The manager has been helpful since we have started the project.

16.  He insisted on  speak at the meeting.

17.  I suggested  take a different approach to the problem.

18.  Since it was raining we decided to stay home.