I think i can help you.
1.I am writing(a letter/letters).
2.We are decorating this room.
3.They are playing football.
4.She is working at the garden.
5.Tom lives in countryside.
6.Many friends were dancing at the party yesterday.
7.I must write to Dr.Lee.
8.We are meeting in the morning at 309.at 9 O'clock tomorrow.
9.He always lose pen.
10.The blue pen is lost today by him.
【自己翻译的,有什么错误的望见谅】