III. Упражнения на все случаи употребления форм, оканчивающихся на –ing:

A

1. Having overcome the economic backwardness inherited from the tsarist Russia, the Soviet Union increased its output of means of production 83-fold, as compared to 1913. 2. The sufferings of people under German fascists were terrible. 3. In America about one million hectares of valuable farm land have been confiscated for military testing ground and camps and every day brings fresh reports of peasant farms being converted to the same purpose and of whole villages being torn down to make room for military installations. 4. The growing economic difficulties are prompting the average American to lift his voice for peace and international cooperation.

1. The disintegration of radioactive substances is a spontaneous process, no method accelerating or retarding it being known. 2. Carbon dioxide may be obtained by heating some carbonates to a high temperature. 3. In chemical changes occurring in substances atoms continue to be indivisible. 4. Water vapour can be condensed into a liquid by taking away heat or by decreasing its volume. 5. Sometimes the cooling without the increasing of pressure results in liquefying the gas. 6. While teaching mathematics Tsiolkovsky continued his self-education studying astronomy, biology, and chemistry. 7. Stanyukovich distinguished himself as a gifted writer, most of his novels being connected with the sea.

B

1. The Soviet national budget is an important medium for raising living standards of the people. 2. Peaceful cooperation among nations espousing different social system is both possible and desirable. 3. Taking advantage of the suddenness of their treacherous attack, the German-fascists strove to crush our army by powerful blows at the beginning of the war. 4. The lifting of the blockade of Leningrad was a great success of both our land and naval forces. 5. The Japanese yoke having been removed by the Soviet Army, the people of North Korea saw their way to independence, democracy, and progress.

1. The temperature having been raised, the vapour began forming again. 2. Having added an alkaline solution, we got a dark precipitate at the bottom of the vessel. 3. Having been evaporated, the solution of the mother liquid of calcium chloride gave white precipitate. 4. When testing the properties of the gas evolved while heating mercuric oxide, we find that it is pure oxygen. 5. The air being shut off the fire, combustion stops. 6. Shipbuilding and fishing industries are widely developed in this part of the country.

C

1.The USSR consistently continues its policy for the safe-guarding of security and for the promoting of peace and friendship among all nations. 2. By safeguarding respect for their sovereignty, by opposing foreign interference in the conduct of their affairs, by refusing to allow the establishing of military bases and any form of occupation by foreign troops, the peoples can guarantee their security and protection of peace. 3. Atlantic block is being torn by deep contradictions. 4. French soldiers demonstrated against being sent to North Africa for suppressing the liberation movement there.

1. At the age of 20 Tsiolkovsky began teaching; a profession at which he continued working for 40 years. 2. The splitting of atom liberates great quantities of energy. 3. Atomic energy is the foundation of all processes occurring in our universe. 4. Yellow sand having been used in manufacture, the glass had a yellowish color. 5. The atomic explosion is based on the splitting of the atom. 6. Two bodies being placed in contact with each other, the temperature of the hot body falls while the temperature of the cold body rises. 7. The current in a circuit is decreased when the resistance is increased, other factors remaining the same.