IV.1.Christopher apologized us for having forgotten to pay the bill
2.After having repaired the car, tom took it out------
3.Having stood there, the porter dreamt of a new job
4.As being her father's youngest child, natashsa______
5.I usually read the book which had been written by my uncle
6.Having left the phone ring for 5 minutes, he then slowly replaced the receiver
7.After having worked hard all day, sarah was exhausted
8.We had seen rupert looking into a shop window
9.Having spent all his money, Daniel couldn't afford a new jacket
10.Computers which have become very popular in the world, are used for many purposes