An explosion blew the roof off an unstable reactor north of Tokyo, ____ fears of a disaster at a nuclear plant ____ in the massive earthquake that hit Japan.
It is ___ the customers’ needs that has made chain stores so popular in big cities in China.
Many people are still in_____ habit of writing silly things in _____ public places.
Niagara Fall is a great tourist ________, drawing millions of visitors every year.
The children were warned of not being too_________about things they are not supposed to know.
--- I regret ________ you that John has been fired. --- I can hardly believe my ears. He is such a fine worker.