If we use the new recycling method, a large number of trees _____.[ ]

The boy is often made pictures for hours by his mother.

Have you ever been to the Qinghai Lake, Jim—Yes. That’s the most fantastic place _______ I’ve ever visited.

Thanks to our teachers. ______ their help, we couldn’t get such good grades.

It has been made __________ publicthat anyone who does harm to the environmentin __________ public placeswill be blamed by __________ public.