Fill in the gaps with the correct particle. 1. I took the doctor a few minutes to bring the patient after he fainted.
2. The famous author hasn't brought a new book yet this year.
3. It's difficult to work and bring a child at the same time.
4 Mobile phones have brought great changes in the teenagers communicate.
Images of pioneers heroes were actively used in the Soviet promotion as examples of high morals and moral. The official list of "pioneers heroes" was issued in 1954 with drawing up the Book of honor of the All-Union pioneer organization of V. I. Lenin; Books of honor of the local pioneer organizations joined it. However some historians challenge a number of the key facts of official biographies of pioneers heroes, and even the fact of existence of some of them.