Подчеркните в них глагол-сказуемое, определите его время, вид и залог. Переведите предложения на русский язык.
Например: is based – Pr. Simple Passive
1. Despite the apparent properties of compound semiconductors, their
general use has not been great because of several limitations. 2. The
potential difference across the junction had been increased. 3. Magnetic
amplifiers have been employed for some 50 years; transistors were reported
upon in 1948. 4. Sometimes a decision to compute is followed by a process
of selecting the particular kind of computing machine, which best suits for
the given problem. 5. Our rockets, the first in the world, were being sent to
other planets. 6. This problem must be approached from another point of
view. 7. This job cannot be done for a short period, you need at least a
month. 8. It is 20 years since he left home, and he has never been heard of
since. 9. Tell him he is being waited for. 10. L. Carroll is remembered not
as a mathematician but as the author of Alice in Wonderland.