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.