Употребить предложения в вопросительной и отрицательной форме .не забудьте заменить some на any или no he is somewhere in the garden she knows something about the man you are readind something interesting. they are discussing something very important . they are travelling somewhere in europe now. somebody is in there . someone called you an hour ago. i know some of these students. everybody knows the answer to this question. everyone we know is going to greece this summer.

He isn`t anywhere in the garden.  
She knows nothing about the man.  
You aren`t reading anything interesting.  
They are not discussing anything very important.
 They are not travelling anywhere in Europe now.  
Nobody is in there.
 No one called you an hour ago.  
I do not know any of these students.
 Nobody knows the answer to this question.
 Anyone we know is not going to Greece this summer.