1, They found him waiting outside when they arrives at the office

2, I left Nam continuing talking to the guests

3, We watch them playing chess

4, Peter doesn't spend any time studying his lesson

5, Closing the door, she rushed to the car

6, The boy threw a stone, so the window was broken

7, Having been to the city before, Jane feels confident and comfortable

II

1, We are happy to receive the donation of 10 million dong from your company 5 day ago

2, Money is used to buy books for the new school library

3, We are certain to issue the receipt as soon as possible

4, We would like to express our thanks for the donation from your company

5, And hope to get more assistance and cooperation from your company in the future

6, We look forward to hearing from you soon