When she first arrived in China, she wondered what the future might have_________for her, but now all her worries are gone（2008·湖北）

Every year lots of trees ________ to make our countrymore beautiful.

No one knows ____________ in fifty years.

If a substance has a higher density, ____ 2, 000kg/ m³, it will not float on water.

Entering the house we found him lying on the ground with his mouth ______ and eyes______.