28．He spent much of the evening with Robert Green,____he had hardly seen in the thirty years since they had worked together at CBS

Parents should see to it _______ their children formthe habit of brushing their teeth every day

I spent the whole day repairing the car The work was______ easy

Xu Beihong is known _____ a great Chinese painter.— Yeah. He is famous _____ his horse paintings.

Peter, we are leaving in 10 minutes. Are you ready–No, I______ our guidebook and towels yet.