A)The person receiving the letter, a letter received yesterday, receiving letters,after receiving the letter
b)Students listening to the report.After listening to the latest news.Listening to the radio.
v) Girl reading a book.To read the book.Reading a book.After reading the book.
g) Student showing your project.The project shown to us.Showing your project.Showing your project.
d) Being in Moscow.As a student.Having all the necessary documents.When we were asked.Making the translation.Making the translation.