1. Jack is a shoe salesman in Seattle, Washington.​

do you often go to the cinema?

i am raeding book in the morning

все ваши предложения в прошедшем времени,поэтому используем past perfect passive.

they said the medicine had been prescribed by the doctor.

  he understood that the house had been robbed by the thieves.

  she said he had been seen the night before with a pretty girl in the club.

  he said that his walkman had been given to him by his mother as

2.  gas consists of a number of particles moving at a tremendous speed.  a)  правое определение

3.  while melting the snow keeps the same temperature.  d)  обстоятельство. 

5.  being started in time, the preparations for the test are over.  d)  обстоятельство. 

1.  the question being too difficult, no one could answer it.  c)  независимый причастный оборот;  

7.  an electronic computer forms a complex device when viewed as a whole.    d)  обстоятельство

  4.  operating characteristics of goods are usually given in graphical forms.b)  левое определение (действительный залог);