单词拼写
They saw a penniless young man         （徘徊）on the pavement outside their house.
I’d just about given myself up when I was       (发现)by a ship.
The earth became so_____ (激烈动荡)that it was not clear whether the shape would last or not.
Why they suddenly appeared still remains a ______(谜).
They are putting too much carbon dioxide into the _____(大气层).
What ____(使迷惑) me is why he looks so old.
We should try our best to apply ____(理论) to practice.
The rise of the sea water is due to the ____(全球) warming.
The birds were flying in all______(方向) at the gun.
He ____(测量)the length of the room and went out.