Question

1. The children (1.swim) and (2.play) in the river when they were at the cam. (3.Get) you off at the people (4.cross) the street. The girl (5.dance) and (6.sing) Russian songs at the concert last Saturday. 2. There (1.be) many cities in our country. (2.Watch) you the demonstration on TV? - I (3.like) it very much. We (4.have) a concret in our school hall before May Day. I (5.not take) in the demonstration. I (6.be) ill. Look, the schoolchildren (7.marsh) with slongans and portraits. (8.Like) you to listen to a good concert of Russian songs?

Answer 1

1) 1 were swiming 2 playing
     3 get 4 crossing
     5 danced 6 song
2) 1 are 2 did you watch
     3 liked it 4 will have
    5 have not taken (part думаю это слово было упущено)
    6 was 7 are marching 8 do you like..

Answer 2

1. The children swam and played in the river when they were at the camp. Did you get off at the people crossing the street? The girl danced and sang Russian songs at the concert last Saturday.

2. There are many cities in our country. Did you watch the demonstration on TV? - I liked it very much. We had a concert in our school hall before May Day. I did not take part in the demonstration. I was ill. Look, the schoolchildren marched with slogans and portraits. Do you like to listen to a good concert of Russian songs?

Please note that the text you provided seems to be incomplete and contains some errors. I have made some corrections and adjustments to make it more coherent. If you have any specific questions or need further clarification, feel free to ask.