1. Scientists are still
discussing the origin of the universe. Present continuous active
2. At the
same time they were discussing the results of the experiment. Past continuous
active
3. At 11
o’clock Jack will be repairing his car. Future continuous active
4.
Stainless steels have successfully made their way into engineering applications.present
perfect active
5. The
use of metals had marked one of the greatest stages in the evolution of man.
present perfect active
6. Tom
will have finished this book by tomorrow evening. Future perfect tense
active
7. The
conquering Normans were greatly impressed by the industrial efficiency they found in
England. Past indefinite passive
8. The
Rolls-Royce motor car is known as the best car in the world. Present indefinite passive
9.
English kings and queens have been crowned in Westminster abbey for about 1000 years.present
perfect passive
10. The
results of the research are being considered by alternative methods. Present continuous passive