Используйте глаголы в скобках в Present Perfect negative.

I (not see) him since 2006.
They (not come) from the south.
George (not translate) the text.
The lesson (not begin) yet.
Ben (not finish) doing his homework.
Ann and Liz (not enter) the classroom.
Nick (not give) the sheep the grass.

пж

умоля

Чуть попозже устроит? Часа через два?)

ок....

I haven`t seen him...They haven`t come...George hasn`t translated...The lesson hasn`t begun...Ben hasn`t finished...Ann and Liz haven`t entered...Nick hasn`t given...надеюсь,все правильно)