Поставьте след. предложения в отрицательную форму Образец:
We are working at the laboratory.
We are not working at the laboratory now.
1. They were discussing the functions of brain for two hours running. 2. We shall be studying the bones of the palm for the whole day. 3. He is taking his examination in history now. 4. I was writing my report when she entered the library hall.
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Объяснение:
1.They were not discussing the functions of brain for two hours running
2We shall not be studying the bones of the palm for the whole day. 3. He is not taking his examination in history now. 4. I was not writing my report when she entered the library hall.