Поставьте в утверждение отрицание и вопросительную форму present perfect
she's written three letters since this morning. She has called on two clients since 12 oclock
Ответ
Автор - gagaaguilerovna
she hasn't written three letters since this morning has she written three letters since this morning? She hasn't called on two clients since 12 oclock has she called on two clients since 12 oclock?