机翼防冰是何种方式防冰？

It is pretty well understood  （）      controls the flow of carbon dioxide in and out the atmosphere today.

The teacher asked all the students in the class to keep their eyes   （）    .

They want to make it clear to the public   （）     they do an important job.

Our hometown is quite different from （）      before.

It depends on     （）   he has enough money.

The man  （）      Mary was so tall that she could hardly see the show.

（）Wang Feng looked after the old woman a whole year moved
us all.

The monitor suggested that we（）        for a picnic on Sunday.

We must remember that  （）    fashion is not the most important thing in  （）       life.

"   （）   your meeting is!" he offered them his sincere congratulations.