Нужна нужно вставить в предложения (времена группы continuous и perfect active voice) под предложениями указаны варианты ответов: 1)the engine from 5 till 7 tomorrow 1.will test 2.will have tested 3.will be testing 2)the scientist problems this time yesterday 1.was't solving 2.had not solved 3. did not solve 3)his father an engineer since he was born 1.is working 2.has been working 3.works 4)the students just the robot in operation 1.have just observed 2.observed 3.are observed 5) for two hours by8 o'clock yesterday 1.had been packing 2.packed 3.were packing 6) new equipment by next month 1.will not got 2.will not have get 3.will not have got 7) problem from 3 till 6 tomorrow 1.will be discuss 2. will be discussing 3.are discusing 8)today she mother since morning 1.was helping 2.has helped 3.has been helping 9)they test by 5 o'clock yesterday 1.has not finished 2.did not finish 3.had not finished 10)the energy sources . 1.are not increasing 2.are not increase 3.not increasing
2) 3
3) 2
4) 2
5) 1
6) 3
7) 2
8) 3
9) 3
10) 1