a) Iron is considered to be the most useful of metals.
b) We аre said to live in the age of atomic energy.
c) He is supposed to have studied well.
d) Volta is known to have invented the first electrical battery.
e) They are assumed to have explained the plan to you long ago.
f) The plan in expected to have been explained to you long ago.
g) The results are supposed to have been used in many experiments.
h) Coal is considered to have been formed in the earth thousands of years ago.
i) He is supposed to be working at this report.
j) These students are said to be translating the text in the 1ibrary.
k) The results were known to be used in many experiments.
l) The experiments are supposed to be made by him in the lab.
m) Cathode ray tubes were known to be employed to compare frequencies.
Информация V