Свременами 1.i(not to see)my friends since last year. 2.the children(to play)with their train set the whole evening yesterday 3.i(not to go)to the cinema everyday. 4.his sister(to study)english two years ago.

1. I have not seen my friends since last year.
2. The children were playing with their train set the whole evening yesterday
3. I do not go to the cinema everyday.
4. His sister studied English two years ago.