Use the verbs in brackets in the required tense: 1. Popov`s "storm indicator", which he (to demonstrate) in 1895, (to

1. Popov\'s \"storm indicator\", which he demonstrated in 1895, was the prototype of modern radio receivers. 2. Great progress has been made in radio engineering since then. 3. V. I. Lenin called radio a newspaper needing no paper and reaching all distances. 4. Radio helps to bring remote areas closer to cultural centres of the country. 5. The importance of radio has not lessened with the appearance of television. 6. The main TV centre is situated in Moscow. 7. Many programmes are transmitted from special TV Theatre. 8. The inventor of the radio A. S. Popov was born in 1859. 9. He graduated from the Petersburg University in 1883. 10. The development of television began with the work of Boris Roding. 11. He put forward the idea of using an electron-beam tube to receive pictures.