Make the following sentences a) negative and b)interrogative. model: 1. we began to work early yesterday. a) we did not begin to work early yesterday. b) did we begin to work early yesterday? 2. airs. green was happy to see her neighbor. a) mrs. green was not happy to see her neighbor. b) was mrs. green happy to see her neighbor? 1. after classes the students played volley-ball. 2. i was very tired after the lesson. 3.the boss went away on business on monday. 4. helen lost her umbrella yesterday. 5. fortunately i caught the 6 o'clock train. (c переводом)