Thanks to the economical development, workers' wages have increased ________ as far as 200% in the recent three years.
Many workers were organized to clear away ________ remained of the World Trade Center.
Some of the scientists held the point________ the book said was right.
Was it ________ the conference of APEC that made Shanghai the focus of the world then?
Use your head. nothing taught by others can have the same effect on you as ________learned by yourself.
________swallow(燕子)doesn’t make ________ summer.